In a school the ratio of boys to girls is 3 to 7 . If the total student is 150 then how many boys are there?

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A retailer buys a Panjabi and a Fatua jointly at Tk. 500. If he sells the Fatua at 10% profit and the panjabi at 5% loss , then he gets, Tk. 520 as total sales price. What is the cost price of the Fatua?

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Mr. Jamal employed 50 workers to finish a work within 30 days . After 20 days he found out that only 50% work had been completed. How many additional workers did Mr. Jamal need to finish the work in time?

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A container full of water weighs 18.5 kg. If one -fourth of the container is full of water , it weighs 6.5 kg . What is the weight of the empty container?

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If 120% of x is equaly to 80% y, which of the following is equal to (x +y)?

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If the product of four consecutive integers is equal to one of them , what is the largest possible value of one of the integers?

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