Question
Rohit spends an average of Rs. 500 on Sundays and Rs.
350 on the remaining days. Find his average spending in a 30-day month starting with Sunday.Solution
Required average = (5 × 500 + 25 × 350) ÷ 30
= (2500 + 8750) ÷ 30
= 11250 ÷ 30
= Rs. 375
Necessary element of change in solar energy to electric energy –
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