Question

Find the value of y in the proportion (4y+5):3=(y+7):4​

Answer 1

Explanation:

4(4y+5)=3(y+7)

16y+20=3y+21

13y=1

y=1/13

Answer 2

y = 1/13

Explanation:

(4y + 5) : 3 = (y+7) :4

Product of extremes = (4y + 5) * 4

= 4y *4 + 5*4

= 16y + 20

Product of mean = 3*(y +7)

= 3*y + 3*7

= 3y + 21

Product of extremes = product of mean

16y + 20 = 3y + 21

Subtract 20 from both sides,

16y = 3y + 21 - 20

16y = 3y + 1

Subtract 3y from both sides,

16y - 3y = 1

13y = 1

`\boxed{\bf y =(1)/(13)}`