Ratio and proportion 1

- 1. If Mr. DeSalvo traveled 360 kilometres and used 12 litres of petrol. What is the rate of kilometres per litre?
A) 4320 km/l B) I don't know, you never taught us unit rate C) .0333 km/l D) 372 km/l E) 30 km/l - 2. You can type 160 words in two minutes. At this rate, how many words can you type in 12 minutes.
A) 1920 B) 13 C) 960 D) 172 E) not enough information - 3. There are 14 boys and 12 girls in class. What is the ratio of boys to girls? [simplest form]
A) 6:7 B) 7:6 C) 14:26 D) 12:14 E) I don't know what a ratio is - 4. Solve for x. x/12 = 9/ 36
A) 6 B) 3 C) 2 D) 7 E) 48 - 5. A karate studio offers a 6 week session for $180. How much would you expect to pay for a 9 week session?
A) 300 B) 270 C) 200 D) 240 E) 120 - 6. There are 7 apples, 4 bananas, and 9 oranges in a basket. What is the ratio of bananas to all fruit?
A) 7:20 B) 20:4 C) 4:7 D) 4:9 E) 1:5 - 7. solve for x: 3/8 = x/40
A) 28 B) 5 C) 15 D) 35 E) 30 - 8. distribute: 4(x+3w+5y)
A) 4x+12w+5y B) 4x+12w+5y C) 16xw+20y D) 4x+12w+20y E) 36xwy - 9. Are the following ratios proportional? 1/4=2/8
A) yes, because there is no x B) yes, because if you do the cross product you get 8=8 which means it is proportional C) not sure so I will put this even though this answer is wrong D) no, because 4 does not equal 8 E) no, because 1 does not equal 2 - 10. Theo wants to use a cookie recipe that makes 36 cookies but he wants to reduce the number of cookies to 24. If the recipe specifies using 6 cups of flour, how much flour should he use?
A) 3 B) 5 C) 4 D) 1 E) 2 - 11. In order to determine her pulse rate, June's nurse counted 18 beats in her pulse in 15 seconds. At this rate, how many beats would she have in 60 seconds?
A) 72 B) 71 C) .833 D) 36 E) 73 - 12. Mary is preparing for her college entrance exams. In a practice test, she answered 12 problems in 30 minutes. At this rate, how many questions can she expect to answer in 150 minutes?
A) 40 B) 60 C) 20 D) 120 E) 80 - 13. Saturn is 125, 000 km in diameter. Suppose I want to do a scale drawing and I will use 1cm scale/100,000 km, then how much would my scale diameter be?
A) don't have enough information to solve this B) 1.25 cm C) 125 cm D) .125 cm E) 12.5 cm - 14. Ed earned $112 for 8 hours of work. At this rate, how much will he earn for 40 hours of work?
A) 570 B) 540 C) 560 D) 580 E) 550 - 15. An architect built a model of a 80-metres tall building he is designing. The model is 60cm tall and 15cm wide. How wide is the actual building?
A) 30m B) 25m C) 20m D) 15m E) 29m - 16. Jack can ride 60 kilometres in 8 hours. What is speed in km/h?
A) 7.5 B) 5.8 C) 58 D) .16 E) 42 - 17. 6 kgs of flour cost $30, how much is the cost of one kg?
A) 24 B) 8 C) 5 D) 36 E) 6 - 18. A student is assigned 5 homeworks. Suppose this student completes 3 of them and gets 100 on these 3, but this student does not do 2 of them and gets a 0 on these 2. What is this student's hw average?
A) 80 B) 60, this is why all hw needs to be done C) 70 D) 60, oh well, i'm still passing E) 90 because all hw does not really count |

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