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Ratio And Proportion Quiz 9 (10 MCQs)

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1. $\frac{3}{5}\ =\ \frac{9}{x}$
2. In an art shop, color X is obtained by mixing 3 parts of red to 5 parts of blue. Color Y is obtained by mixing 5 parts of red to 3 parts of blue. We are given 24 liters of color Y. How many liters of blue paint should we add to color Y to change it to X?
3. If A:B = 2:3, B:C =4:5, and C:D = 5:9. Then A:D is equal to
4. If x + 5 is the mean proportion between x + 2 and x + 9, the value of 'x' is:
5. Key and Bella share an electricity bill in the ratio 5: 4. The electricity bill is $ 72. How much does Key much pay?
6. You earn $ 40 shoveling off 5 sidewalks. You charge the same amount for each sidewalk. How much will you earn if you shovel 3 sidewalks?
7. If 45 m of a uniform rod weight 171 kg, then what will be the weight of 12 m of the same rod?
8. The ratio of the length to the width of a rectangle is 4:3. If the length is 20 cm, what is the width?
9. The cost of type 1 rice is Rs.15 per Kg and Type 2 rice is Rs.20 per kg.If both type 1 and Type 2 are Mixed in the ratio of 2:3, then price per Kg of the mixed variety of rice is:
10. Suppose y varies directly as x. If y = 22.5 when x = 15, find y when x = 20.
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