The ratio of the present age of father to that of son is 7 : 2 after 10 years their ages will be in the ratio of 9 : 4 . The present ages of the father is

A 35 years
B 40 years
C 30 years
D 25 years

Correct Answer: 35 years

Let , the peresent ages of father and son = 7x and 2x ATQ, 7x + 102x + 10 = 94⇒28x  + 40  = 18 x  + 90 ⇒28x  - 18x  = 90 - 40⇒10x = 50⇒x = 5010.'. x = 5 The present ages of the father   = 7x  = 7×5 = 35 years 
Bissoy MCQ
#গণিত #অনুপাত-সমানুপাত (Ratio-Proportion) #Combined Bank (সমন্বিত ব্যাংক) #জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

Related Questions

The sum of the present ages of a father and his son is 60 years . Six years ago, father's age was five times the age of the son. After 6 years, son's age will be -
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