Question

find kamal's age 4 year back if his present age is z year (a) 4z (b) x+4 (c) z-4​

Answer 1

Answer:

His age before 4 years will be z-4

Let his present age be z

Than four years back it will be z-4

as we have substract his current age(z) with 4 to get the correct answer.