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2 .A wine seller had three types of wine, 403 litres of 1st kind, 434 litres of 2nd kind and 465 litres of 3rd kind. Find the least possible number of casks of equal size in which different types of wine can be filled without mixing
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3 .The positive square root of [0.6 × 0.6 × 0.6 + 0.4 × 0.4 × 0.4 + 3 × 0.6 × 0.4] is equal to –
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4 .The average age of a committee of eight members is 40 years. A member aged 55 years retired and his place was taken by another member aged 39 years. Find the average age of the present committee.
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5 .There are 40 boys in a class and their average age is 16 years. one boy, aged 17 years, l eaving the cl ass and anot her j o i n i n g , t he a v e r a g e a g e be c o me s 15. 875 years. The age of the new boy is –
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6 .A, B and C three are batsmen. The ratio of the runs scored by them in a certain match are as B : A = 3 : 5 and C : B = 5 : 4. In all they scored 564 runs. The number of runs scored by B is –
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7 .55 litres of mixture has milk and water in the ratio 7 : 4. How much quantity of water must be added in the mixture to get milk and water in the ratio 7 : 6
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8 .A, B and C enter into a partnership. A contributes ` 320000 for 4 months, B contributes ` 510000 for 3 months and C contributes ` 270000 for 5 months. If the total profit be ` 124800, then A's share in the profit is –
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9 .A man spends 40% of his monthly salary on food and one-third of the remaining on transport. If he saves ` 4500 per month, which is equal to half the balance after spending on food and transport, his monthly salary is –
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10 .In an examination a candidate must score 40% marks to pas s. A candidat e, who gets 220 marks, fails by 20 marks. What are the maxi mum marks for the examination ?
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