Question
Shivank purchased a total of 630 kg of wheat, rice, and
pulses in the ratio 3:2:4, respectively. After selling 70% of the wheat, 40% of the rice, and 40% of the pulses, what percentage of the initial combined weight of rice and pulses remains?Solution
Let the weight of wheat, rice and pulses are 3x, 2x and 4x 3x+2x+4x = 630 9x = 630 x = 70 wheat = 3x = 210 kg rice = 2x = 140 kg pulse = 4x = 280 kg remaining wheat after selling 70% = 30% of 210 = 63 kg remaining rice after selling 40% = 60% of 140 = 84 kg remaining pulse after selling 40% = 60% of 280 = 168 kg total remaining = 63+84+168 = 315 
= 75%
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