Question
Five friends each contributed Rs. 70. If the sixth
friend gives Rs. 50 more than the average contribution of all six, how much did the sixth friend contribute?Solution
ATQ,
Let the contribution of the sixth friend be Rs. 'p'. So, (70 × 5 + p) ÷ 6 + 50 = p Or, (350 + p) ÷ 6 = p - 50 Or, 350 + p = 6 × (p - 50) Or, 350 + p = 6p - 300 Or, 5p = 650 Or, p = 130
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