Answer:
50 boys
Step-by-step explanation:
The number of groups = 24
The average number of children = 16
The new average number of children when one group is added = 18
The ratio of boys to girls in the group that just joined = 5:6
The initial number of boys = 220
Let the initial number of children
The initial total number of children = 24 × 16 = 384
The initial number of girls = 384 - 220 = 164
The final number of children = 25 × 18 = 450
The number of children in the group that joined in the game = 450 - 384 = 66
The ratio of boys to girls in the group = 5:6
Therefore, we get;
The number of boys = 66 × 5/11 = 30
The number of girls = 66 - 30 = 36
The number of boys at the end = 220 + 30 = 250
The number of girls at the end = 164 + 36 = 200
The number of more boys than girls at the end = 250 - 200 = 50
The number of more boys than girls at the end = 50 boys
(4a +6) (3a? - 3a+6)
(4a + 6) (3a2- 3a +6) =
Answer:
12a^3+6a^2+6a+36
Step-by-step explanation:
Sana makatulong!
Answer:
1.2 hours
Step-by-step explanation:
Given the following :
Time taken by Adam to shovel driveway = 2 hours
Time taken by BEV to shovel highway = 3 hours
How long will it take them working together
Hence Adam's rate of shoveling per hour :
Reciprocal of time taken = 1/2 per hour
BEV's rate will also be ;
1/ 3 per hour
If both work together ; that is combining the rate :
1/2 + 1/3 = (3 + 2) = 5/6
Combined rate = 5/6
Total fraction of shoveled area = 1:
Time taken = area / rate
= 1 ÷ (5/6)
= 1 × (6 / 5)
= 6/5
= 1 1/5 hours = 1.2 hours
B P = 4R + 8B + 25
C P = 25(4R + 8B)
D P = (4)(8)(R + B) + 25
The price quote formula for this problem is P = 4R + 8B + 25.
Hence option B is correct.
Use the concept of forming of equation defined as:
A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").
Given that,
Devon owns a house cleaning company.
He calculates his price quotes for potential customers using a specific formula.
The formula includes a $25 base charge.
He adds $8 for each bathroom (B).
He adds $4 for each other room (R).
The objective is to determine which formula represents Devon's price quote calculation.
If R represent the number of rooms
Then cost of R room = 4R
If B represents the number of bathrooms
Then cost for B bathroom = 8B
The base charge is 25
Then the total charge is = 4R + 8B + 25
Hence,
The price quote formula for this problem is P = 4R + 8B + 25 which is option B.
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