Q. The ages of Sunil and Anil are in the ratio 8:7, after 6 years, the ratio of their ages will be 19 : 17. What is the difference in their present ages?
Answer 4 yr
EXPLANATION
Suppose the ages of Sunil and Anil are 8x yr and 7x yr, respectively. After 6 yr,
(8x+6)/(7x+6) =19/17
136x + 102 = 133x + 114
136x – 133x = 114 – 102
3x = 12 X = 12/3 = 4
Age of Sunil = 8x = 8 × 4 = 32 yr
Present age Anil = 7x = 7 × 4 = 28...
Showing posts with label Numerical. Show all posts
Showing posts with label Numerical. Show all posts
Wednesday, 13 May 2020
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