Question

if A varies directly as B and if a = 5 when we B= 6 find a when B - 1 = 11

Answer 1

A varies directly as B means if a = 2 then b = 2, 3 , 4 and if a=5 Then b= 6 means if b=12 then a= 10
B-1=11 means B= 11+1 = 12 or a= 10

Answer 2

The value of A = 10