1. The ages of Samir and Tanuj are in the ratio of 8 :15 years respectively. After 9 years the ratio of their ages will be 11 :18. What is the difference in years between their ages ?
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By: anil on 05 May 2019 01.40 am
Let the present ages of Samir and Tanuj be $$8x$$ years and $$15x$$ years respectively. => After 9 years, acc to ques => $$frac{8x + 9}{15x + 9} = frac{11}{18}$$ => $$144x + 162 = 165x + 99$$ => $$165x - 144x = 162 - 99$$ => $$21x = 63$$ => $$x = frac{63}{21} = 3$$ $$ herefore$$ Difference in their present ages = $$15x - 8x = 7x$$ = $$7 imes 3 = 21$$ years
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