How can the number 39 be divided into two parts in order that the sum of 2/3 of one part and 3/4 of the other part is 28? Explain your workings

Answer 1

Let x be one part and 39-x be the other part.

ans:2/3(x)+3/4(39-x)=28
x=15

therefore,one part divided out is 15 and the other part is (15-2)=13

Answer 2

oh sorry,the other part is 39-15 and should be24

Answer 3

Mary's age is 2/3 that of Peter's. Two years ago Mary's age was 1/2 of what Peter's age will be in five years time. How old is Peter now?

Answer 4

2/3