These question are based on the following data.Study it carefully and answer the question that follow.
In a school having 400 students boys and girls are in the ratio of 3:5 The students speak Hindi,English or both the languages 12% of the boys speak only Hindi. 22% of the girls speak only English 24% of the total students speak only Hindi and the number of boys speaking both the languages is six times the number of boys speaking only Hindi
The number of girls speaking only Hindi is what percent of the total number of students speaking only Hindi ?
What is the ratio of the number of boys to the number of girls speaking both the languages ?
For the following questions answer them individually
Raghuvir bought 10 calculators and 16 watches for Rs. 56000 and sold them at an overall profit of 20%. At what price should he sell 15 calculators and 24 wathces so that he receives the same percentage of profit ?
A vessel contains 64 litres of mixture of milk and water in the ratio 7 : 3 respectively. 8 litres of mixture is replaced by 8 litres of milk. What is the ratio of milk and water in the resulting mixture ?
The compound interest earned by Suresh on a certain amount at the end of two years at the rate of 8 p.c.p.a was Rs. 1,414.4. What was the total amount that Suresh got back at the end of two years in the form of principal plus interest earned?
A man can row threeÂquarters of a kilometre against the stream in 45/4 min and return in 15/2 min. The speed of the man in still water is :
4 men and 3 women finish a job in 6 days, and 5 men and 7 women can do the same job in 4 days. How long will 1 man and 1 woman take to do the work ?
