# If 7x=8k and 5y=6k, then the value of ratio x is to y is :

(a) 20:21

(b) 21:20

(c) 35:48

(d) 48:35

**Answer: (a) 20: 21**

**Explanation:-**

7 X = 8 k

k = 7 X/8

5 Y = 6 k

Put the value of k = 7 X/8,

Then, 5 Y = 6 x 7 X/8

40 Y = 42 X

X/Y = 40/42

= 20/21

So, the ratio of X and Y is 20: 21.

Hence, the correct answer is option (a) 20: 21.