Page 44 - Arithmetic

Exercise
1. If 918 is divided into three parts proportional to 1: 2: 1, find the value of the second part. 234
a) 162 b) 324 c) 432 d) 486 e) Cannot be determined
148
2. Find the fraction bearing the same ratio to 9 that 5 does to 15.
a) 1 b) 6 6
c) 1 d) 5 56
e) 5 7
3. The cost of a car and bike is in the ratio of 8:3. If the car costs $12000 more than the bike, what is the price of the car?
a) $24,000 b) $72,000 c) $192,000 d) $145,000 e) $128,000
4. The speed of three Mercedes cars is in the ratio 3:4:6. If all three cars travel the same distance what will be the ratio of the time taken?
a) 3:4:6 b) 4:3:2 c) 2:3:4 d) 6:4:3 e) Cannot be determined
5. P and Q are alloys of silver and gold which are prepared by mixing metals in the ratio 9:7 and 5:11 respectively. If a jeweler melts equal quantities of the alloy to make a third alloy R, what is the ratio of silver and gold in the alloy R?
a) 9:5 b) 4:3 c) 5:9 d) 9:7 e) 7:9
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Arithmetic Concept