6. Average expenditure of four days...
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6. Average expenditure of four days of a boy is 63. If first day he spent 110, second day he spent 95, third day, he spent 25, how much did he spend on fourth day? (1) § 22 (2) 20 (3) 24 (4) * 28

11th - 12th Class
Maths
Solution
103
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6. (1) Let the boy spent be ( ₹ times ) on fourth day. Then, according to the question, [ begin{array}{r} frac{110+95+25+x}{4}=63 Rightarrow quad 230+x=252 Rightarrow quad x=₹ 22 end{array} ]
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