Rename 3/4 and 2/5 using 20 as the common denominator

Let’s use 2 methods to do this:

First, let’s try cross multiplying:

3/4=x/20

2/5=x/20

20 times 3 = 60

60 divided by 4 is 15, so 3/4 = 15/20

20 times 2 = 40

40 divided by 5 is 8, so 2/5 = 8/20

The next method:

What time 4 equals to 20? What times 5 equals to 20?

4 times FIVE equals to 20

For the fraction of 3/4, multiply the numerator and the denominator by five to get your answer of 15/20.

5 times FOUR equals to 20

For the fraction of 2/5, multiply the numerator and the denominator by four to get your answer of 8/20.

Hope I helped!

it should be a and d. lmk if i'm wrong xd

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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