7.
0:00 Intro
00:17 Sum 1. A coal merchant makes a profit of 20% by selling firewood at Rs 25 per quintal.
(i) What did 240 quintals of firewood cost him?
ii) if he sells the firewood at Rs 22.50 per quintal, what is his profit percent on the whole investment.
09:07 Sum 2. A fruit seller loses 10% by selling oranges at 26 for Rs 25. How many oranges should he sell for Rs 5 to gain 17 percent?
15:11 Sum 3. A milkman purchases milk at the rate of 12 per liter and then mixes 25 percent water with it. Find his profit percent, if he sells the mixture at 15 per liter.
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