Page 39 - Arithmetic

6. Find 15% of (4% of 3200)
a) 0.192 b) 1920 c) 1.92 d) 192 e) 19.2
7. By how much percent is three-sevenths of 35 lesser than eighth-ninths of 54?
a) 76.19% b) 12.75% c) 47% d) 31.25% e) 68.75%
8. If B is 175% of C, then C is what percent of (B + C)
a) 36.36% b) 275% c) 45.45% d) 75% e) 25%
9. A reduction in the price of raw pasta by 20% allows Henry to buy 5 pounds more for $100. What is the reduced price of the raw pasta per pound?
a) $3 b) $4 c) $5 d) $6 e) $7
10. John, the milkman, sells milk after mixing water in it. In a jar full of pure milk, John replaces 10% of the milk with water, and the same process is repeated 3 times. At the end of the third operation, what is the purity of the milk?
a) 90% b) 81% c) 72.9% d) 66.3% e) 60.3%
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Arithmetic Concept