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Three types of pulses are mixed together. Their volumes are in proportion to 5, 4 and 3 respectively and the weights of equal volumes are in proportion to 6, 5 and 4 respectively. What is the weight of the pulse of first type if the weight of mixture is 248 kg?1). 120 kg2). 119 kg3). 110 kg4). 118 kg |
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Answer» Volume of three types of pulse are in proportion 5, 4 and 3 Weight of EQUAL volume are in proportion 6, 5 and 4 ⇒ Ratio of weights of three types of pulse = (5 × 6) : (4 × 5) : (3 × 4) Let the weight of first type be 15x, second type be 10x and third type be 6x ⇒ 15x + 10x + 6x = 31x ⇒ x = 248/31 = 8 ∴ weight of first type = 15x = 15 × 8 = 120 |
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