Question

if 120 = 2a x 3b x 5 ,then find the value of a+b

Answer 1

explanation:

(1).

120= 2a x 3b x 5

120 = 30ab

ab= 4

then,

a= 2, 1 or 4

b= 2,4 or 1

now,

a+b= 4 or 5