One year ago a mother was 4 times older then her son. After 6 years, her age becomes more than double her sons age by 5 years. The present ratio of their age will be
Vaibhav got a monthly increment of 12 percent of Pushpa's monthly salary. Pushpa's monthly salary is 7800. Vaibhav's monthly salary before increment was 6500. What amount will he earn in five months after his increment?
(A) 37.180
(B) 35.180
(C) 36.180
(D) None of these
Three men or eight boys can do a piece of work in 17 days.How manay days will two men and six boys together take to finish the same work:
A)11 days
B)17 days
C)12 days
D)none