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
How many boys speak Hindi ?
How many girls speak only Hindi ?
How many students speak English ?
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 three quarters 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 ?
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