Others Maths Puzzle

The ratio of earnings to expenditure of A is 5:3 and that of B is 7:6. If the savings of A is double that of B, then what could be the ratio of total earnings of A and B together to the total expenditure of A and B together?
(A)3:5 (B)5:3 (C)4:3 (D)2:1

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Others Other Question

a man has just enough money to buy 50 papayas or 30 watermelons. he decides to spend only 90% of his money and buy 9 watermelons. how many papayas can he buy with the remaining money that he wants to spend? There were 25 questions in CAT 2011 Quant Section. If 4 marks are awarded for every correct answer 1 mark is deducted for every wrong answer, how many different net scores are possible?

a) 100 b) 125 c) 126 d) 120