The ratio of ages of A & B is 3:4 after 12 year. The ratio of Their ages will be 7:8. find the present age of A
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Answer:
9
Step-by-step explanation:
A:B = 3:4
Let their common multiple be z
therefore A = (3z) yrs & B = (4z) yrs
After 12 yrs
A = 3z+12) yrs & B= (4z+12)yrs
( see above in photo for next steps)
z= 3
present age of A=3(3) ==9
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