Question

7. If the value of x varies directly with the value of y, and x = 3 when y = 21. What is the valu

y, and x = 3 when y = 21. What is the value of x when y =
105?

Answer 1

So basically

When x = 3 , y= 21

3/21 = x/105

What number times 21 is equal to 105?
21* 5 = 105

So 3* 5 = 15

When x= 15, y= 105

Hope this helps!

Answer 2

15

Explanation:

Because x=y÷7

i.e,105÷7=15