Question

If you help I'll mark as brilliant!!!​

Answer 1

I had 16/5 instead of 5/16

Explanation:

10 (a+b) = 42a

10a + 10b =42a

10b = a( 42 - 10)

(10)b = a(32)

32 /10 = a/b

16/5 = a /b

Ratio of a to b = 16 : 5