You and a friend baked 400 cupcakes together. if your friend baked 60% of the cupcakes, how many cupcakes did you bake?

Answers

Answer 1

Answer: 160 cupcakes

If your friend baked 60% of 400 total, that means that the remaining amount of cupcakes that you baked is 100% – 60% = 40%. So, we must find 40% of 400

To do this, first we must convert 40% into decimal form. We can do this by dividing it by 100: 40 ÷ 100 = 0.4

Then, "of" usually means multiplication. In this case, it does, so to find 40% of 400, we must calculate 0.4 • 400

0.4 • 400 = 160, so you baked 160 cupcakes

Answer 2

Answer: Your friend baked 60% so (60/100) x 400 = 240

400 - 240 = 160

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Simplify the fraction 13/78

Answers

Simplify by 13 and will result 1/6

Okay, So We Know That 13 Is A Prime Number.
So, The Only Thing We Can Do Is Look At The Multiples Of 78.
1*78
2*39
3*26
6*13
13*6
26*3
78*1.
So, We Can Divide 78 By 13.
To Simplify, Do:
$(78)/(13)$ ÷ $(13)/(13) = (1)/(6)$
So, The Answer Is
$(1)/(6)$

Elmer has a collection of 300 fossils. Of those, 21% are fossilized snail shells. How many fossilized snail shells does Elmer have?

Answers

use the percent proportion

21 x
—— = ——
100 300

to solve :
21 x 300 = 6300
6300 ÷ 100 = 63

Answer = 63 of Elmer’s shells are fossilized snail shells :)

Which fractions are equivalent to -1/5 ?

Choose all answers that are correct.

Answers

ok so remember
negative/negative=positive
positive/positive=positive
positive/negative=negative
negative/positive=neative

we have

which are equalivilent to -1/5
negative/positive=negative
we want 2 different signs on top and bottom aka the fraction is negative

cross out -4/-20

ok so a property of equal fractions are
if a/b=c/d, then (a*d)/(b*c)=1
ie
if 1/2=4/8, then 1/2 times 8/4=8/8=1 so

-1/5 times -25/5=25/25=1
they are equal

-1/5 times 10/-2=-10/-10=1
they are equal

-1/5 times 25/-10=-25/-50=1/2,
noe equall

5/-25 and -2/10 are equal

Your answer is 5/-25 and -2/10 because -1/5 is -0.2 and 5/-25 gives you -0.2 and -2/10 also gives you -0.2 but you also have -10/25 which gives you 0.4 therefor your answer would be 5/-25 and -2/10

hope this helped

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