Ratio and Proportion | Ratio | Triangle

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prolems for grade 6
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  RATIO AND PROPORTION Name:________________________ Score:_________________  _____1. The ratio of two numbers is 6 : 7. If the larger number is 42, what is the smaller number? a.   18 b 27 c. 36 d. 42  _____2. In a bag of marbles, the ratio of the number of green marbles to the number of blue marbles is 4 to 5. If there are 48 green marbles, how many blue marbles are in the bag? a.   15 b. 60 c. 75 d. 135  _____3. In a class of 200 students, the ratio of boys to girls is 2 : 3. How many girls are in the class? a.   40 b. 60 c. 80 d. 120  _____4. If the ratio of boys to girls in a classroom is 1 to 3, what percent of the class are girls? a.   75% b. 50% C. 33 1/3% d. 25%  _____5. A paint mixture contains yellow, blue and red in a 3 : 2 : 1 ratio, respectively. If the mixture contains twelve pints of yellow paint, how many pints are there altogether? a.   12 b. 15 c. 16 d. 24  _____6. A 40-meter flagpole casts a 10-meter shadow. If a flower casts a 32-millimeter shadow, how many millimeters tall is the flower? a.   400 b. 128 c. 10 d. 4  _____7. A 30-meter long steel cylindrical pipe of uniform constitution is cut into two pieces. One piece is 24 meters and weighs 16 kilograms. What was the weight, in kilograms, of the pipe before it was cut? a.   20 b. 22 c. 24 d. 28  _____8. Find two numbers in the ratio 15 : 8 and differs by 21. a.   24 : 3 b. 45 : 24 c. 75 : 54 d. 3 : 24  _____9. The ages of three brothers, John, Rahman and Mansur are in the ratio 1 : 2 : 3. Their ages add up to 42 years. Find the age of the oldest brother. a.   9 b. 12 c. 14 d. 21  ____10. Mr. Go made 750 ml of tea. He filled three glasses with tea in the ratio 2 : 5 : 8. How much tea did the biggest glass contain? a.   150ml b. 200 ml c. 400 ml d. 450 ml  _____11. A sum of P1080 was divided among three sisters Anne, Jackie and Lynn in the ratio 3 : 4 : 2. How much more money did Jackie get than Lynn? a.   P480 b. P360 c. P240 d. P140  _____12. The ratio of the perimeter of three equilateral triangles is 2 : 3 : 4. If the perimeter of the largest triangle is 12 cm more than the perimeter of the smallest triangle, find the perimeter of the largest triangle. a.   18 cm b. 20cm c. 24cm d. 36cm  _____13. Two numbers are in the ratio 3 : 10. By adding 25 to each number, we get two new numbers in the ratio 8 : 15. Find the srcinal numbers. a.   3 and 10 b. 12 and 40 c. 15 and 50 d. 9 and 30  _____14. The ratio of the number of stamps Peter has to the number of stamps Leon has is 2 : 3. The ratio of the number of stamps Mario has to the number of stamps Leon has is 5 : 6. Find the ratio of the number of stamps Peter has to the number of stamps Mario has. a.   4 : 5 b. 2 : 5 c. 4 : 8 d. 1 : 5  _____15. The ratio of the number of stamps Peter has to the number of stamps Leon has is 2 : 3. The ratio of the number of stamps Mario has to the number of stamps Leon has is 5 : 6. If Peter has 24 stamps, how many stamps do the three of them have altogether? a.   70 b. 80 c. 90 d. 110  _____16. The ratio of the number of cakes Ann had to the number of cakes Rose had was 5 : 2. After Ann sold 28 cakes, the ratio became 3 : 4. How many cakes did each girl have at first?   
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