Ratio between Ram and her mother's present age is 2 : 5 after 8 years ratio will be 10:19. Find the present age of mother?
42 years
40 years
36 years
30 years
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correct answer is 30 years
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Answer:
30 years
Step-by-step explanation:
Present ratio = 2:5
Hence the present age will be 2x and 5x
There age after 8 years will be 2x+8 and 5x+8
.°. 2x+8 = 10
5x+8 19
Cross multiplication
=> 19 (2x+8) = 10 (5x+8)
=> 38x + 152 = 50x + 80
=> 152 - 80 = 50x - 38x
=> 72 = 12x
=> x = 72/12 = 6
The present age of Ram = 2x = 2*6 = 12
The present age of mother = 5x = 5*6 = 30
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