MATHEMATICS MIDDLE SCHOOL

Lisa, an experienced shipping clerk, can fill a certain order in 10 hours. Tom, a new clerk, needs 13 hours to do the Thesame job. Working together, how long will it take them to fill the order?
(Sin

Answers

Answer 1

Answer:

It takes 6 hoursto complete the work for both Lisa and Tom working together.

Step-by-step explanation:

step 1 :

Let us assume that,

Total work = 130 units (take a number that can be divisible by both 10 and 13)

step 2 :

Lisa completes the work in 10 hours.

Lisa's work per hour=total work / time taken to complete the work

= 130 / 10 = 13 units per hour

step 3 :

Tom completes the work in 13 hours.

Tom's work per hour =total work / time taken to complete the work

= 130 / 13 = 10 units per hour

step 4 :

Both Lisa and Tom can work per hour = 13 units + 10 units

= 23 units per hour

step 5 :

Working together can complete the total work in = total work / time taken to complete the work together

= 130 units / 23 units per hour = 5.65 (which is approximately 6 hours).

∴ Time taken by working together = 6 hours.

Related Questions

Jasmine is a real estate agent. She earns a base salary of $1,500 per month plus a commission of 2.75% of her sales. Last month her sales totaled $540,000. What were her total earnings last month?
The equation d= -6t + 10 represents the distance d, in miles, Ralph walks from the library to his house in t hours. His sister, Joan, leaves the library right after Ralph. She rides her bicycle from the library to their house at a constant rate. The equation d = 14t represents Joan's bicycle ride where d, is the distance, in miles, and t is the time, in hours.After how many miles will Joan meet Ralph walking to their house?A. 2.5 milesB. 7 milesC. 18 milesD. 28 miles
A car rental costs $50 for the first day. Additional days cost $35 per day, unless the car is rented for 7 days or more, in which case there is a 10% discount on the daily rate.
colton earns $7 per hour plus $1.50 for each pizza delivery. the expression 7h+1.50 can be used to find the total earrings after h hours and d deliveries have been made. how much money will colton earn after working 15 hours and making 8 delivers
Compare the values of the underlined digits 6,300 and 530 with three being the underlined digit.

Monica uses the distributive property to write and equivalent expression to 63+28. Which expression did Monica write?A. 9(7+3)
B. 3(21+25)
C. 7(9+4)
D. 3(60+25)

Answers

The correct option is c, which is 7(9+4).

The distributive property is a property that helps us to know that when a number is multiplied by the sum of two numbers, it is equal to the sum of products of these two numbersmultiplied by the third number individually.

For example,

a(b+c) = ab+ac,

Now, as given Monica uses the distributive property to write an equivalent expression to 63+28.

therefore, the common ratio is 63, and 28 is 7.

Thus, 63+28 = 7(9+4).

Thus, the correct option is c, which is 7(9+4).

Learn more about the distributive property:

brainly.com/question/13130806

Answer:

Step-by-step explanation:

The highest common factor of 63 and 28 is 7, thus taking out 7 gives

63 + 28 = 7(9 + 4) → C

5/x=25/6 how do I solve it and what is x?

Answers

First you do 25/6. That is 4 1/6 or 4.1666 recurring. This mean 5 divide by X is 4.1666 recurring. To find X we do 4.16666 divided by 5 so X is 0.8333 recurring.

Juanita organizes her magazines into 3 equal piles. She has a total of 18 magazines. How many magazines are in each pile

Answers

The number of magazines in each pile will be 6.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Juanita organizes her magazines into 3 equal piles. She has a total of 18 magazines.

The number of magazines in each pile will be calculated as,

N = 18 / 3

N = 6 piles

Therefore, the number of magazines in each pile will be 6.

To know more about an expression follow

brainly.com/question/11509741

#SPJ2

You just divide 18 by 3 and your answer is 6.

How are perpendicular lines and intersecting lines are alike and different

Answers

intersecting lines cross each other like a x but they do not form any right angles but perpendicular lines cross each other like a + but they form right angles

Perpendicular lines are like a plus symbol,
but intersecting lines intersect in any way.

The elevator at the local mall has a weight limit of 1,800 pounds and requires that the maximum person allowance be no more than nine people. Let w represent the amount of weight. Write an inequality to describe the maximum weight allowance in the elevator at one time.

Answers

The elevator at the local mall has a weight limit of 1,800 pounds is

9w ≤ 1800.

What is Inequality?

Inequalities are mathematical formulas in which neither side is equal. Unlike equations, we compare two values in inequality. In between, the equal sign is substituted by a less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

The elevator at the local mall has a weight limit of 1,800 pounds.

Not more than 9 people allowed in the Elevator.

let the weight of one person be w.

Then, the inequality is

9w ≤ 1800

Learn more about Inequality here:

brainly.com/question/30231190

#SPJ3

The inequality is going to be w<_1800 (that's less than or equal too)

miss holman gave a 90 cent tip to a waitress for serving a meal costing $6.00. what is the percent of the bill was her tip?

Answers

Answer:

The tip was 15% of the meal.

Step-by-step explanation:

The amount of tip that miss Holman gave is 90 cent or $0.90

The total cost of the meal is $6.00

Let the tip is x% of the total cost of $6, so the amount of tip is,

$=6* (x)/(100)$

But as it given as $0.90, so

$\Rightarrow 6* (x)/(100)=0.90$

$\Rightarrow x=(0.90* 100)/(6)$

$\Rightarrow x=15\%$

Therefore, miss Holman gave a generous 15% tip to the waitress for serving the meal.

$90cent\ \ \ | convert\ cent \ into\ \$\n\n1dollar=100cent\n\n90cent= 0.9dollar\n\n(0.9)/(6)*100\%=(90)/(6)\%=15\%\n\nTip\ was\ 15\%\ of\ cost\ of\ meal.$