The ages of A and Bare in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. The present age of B is
(a) 20 years
(d) 21 years
(b) 28 years
(c) 15 years
Answers
Answered by
3
Step-by-step explanation:
take ratios as x
ans:c)28yrs
Attachments:
Answered by
4
Answer:
28
Step-by-step explanation:
4(5x+4) = 3(7x+4)
= 20x+16= 21x+12
=20x-21x= 12 +16
= x= 28
28yrs
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