Question

The ratio of age 5:7 after four years the ratio of their age will be 3:4 find out their present age

Answer 1

Step-by-step explanation:

LET

AGE OF A BE 5x

AGE OF B BE 7x

AFTER 4 YEARS

AGE OF A = 5X +4

AGE OF B = 7X + 4

AND

THE RATIO OF AGE WILL BE 3:4

SO

4(5X +4) = 3(7X + 4)

20X + 16 = 21X + 12

16 - 12 = 21X -20X

4 = x

• THEREFORE VALUE OF X IS 4

SO PUTTING THE VALUE OF X WE GET

• AGE OF A = (5 × 4) = 20

• AGE OF B = (7 × 4) = 28

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