1 . If two non-zero positive integers p and q are such that p = 4q and p < 8, then q =?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option A

Explanation:

ধরি, এর বর্তমান বয়স x বছর
∴∴ A " " " (x   +   9 ) "
∴∴ (x   +   19   +   10)  =  2(x  -  10 )
⇒⇒  x   +  19  =  2x  -  20
⇒⇒ 2x  -  x  =  20   +   19
∴∴ x  =  39