The ages of two friends is in the ratio of 6:5.If the sum of their ages is 66. Then after how many years will the ratio become 7:6? Choose the correct choice from the following answers:
A) 5 B) 6 C) 8 D) 9 E) 10
the ratio of ages is 6:5 or we can say 6x and 5x   so , 6x+5x=66 (sum)   x=6   the ages are  6*6= 
<gadget id="calculator"> 6*6</gadget>
<output>36</output>
36 and   6*5= 
<gadget id="calculator">  6*5</gadget>
<output>30</output>
30   let the years after which ratio will become 7:6 be y   36+y/30+y=7/6   the value of y will be 6   ANSWER:6
<result>B</result>
The ages of two friends is in the ratio of 6:5.If the sum of their ages is 66. Then after how many years will the ratio become 7:6?