The mother's age is 10 times her daughter's age. After 3 years, the age of the mother will be 7 times her daughter's age. The present ages of the daughter and the mother are, respectively

Anwar goes for a vacation with Rs.1650 for his expanses. If he extends his vacation by 3 days, he has to cut down his daily expanses by Rs.5. Find original duration of his vacation.

Following chart shows number of students in a school who got distinction in one of three subjects. Find the number of students who got distinction in at least two subjects.