pls answer this with explanation and I will mark has brainlist pls answer this....
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In a coin box 50-paisa coins and 1 rupee coins are in the ratio of 2:5 respectively. If the average number of coins are 140, calculate 1 rupee coins in the box (a) 70 (b) 100 (c) 200 (d) 210 The individual weights (in kg) of six of them are 52.57
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