Ratio and Proportion
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Q. A and B can complete a work in 12 days and 15 days respectively. In how many days can they complete the work together?
Q. A recipe requires sugar and flour in the ratio of 2:3. If there are 10 cups of flour, how many cups of sugar are needed?
Q. A recipe requires sugar and flour in the ratio of 2:3. If there are 15 cups of flour, how many cups of sugar are needed?
Q. If the ratio of the lengths of two sides of a triangle is 3:4 and the perimeter is 70 cm, what is the length of the shorter side?
Q. If the ratio of the number of apples to oranges is 3:5 and there are 40 oranges, how many apples are there?
Q. If the ratio of the speeds of two cars is 5:7 and the faster car travels 140 km in 2 hours, how far does the slower car travel in the same time?
Q. If the ratio of the speeds of two trains is 5:7 and the faster train travels 280 km in 4 hours, how far does the slower train travel in the same time?
Q. If the ratio of two numbers is 7:9 and their sum is 80, what is the smaller number?
Q. In a mixture of milk and water, the ratio of milk to water is 5:2. If there are 35 liters of milk, how much water is there?
Q. In a mixture of milk and water, the ratio of milk to water is 5:2. If there are 21 liters of water, how much milk is there?
Q. The ratio of the ages of two friends is 2:3. If the sum of their ages is 50 years, what is the age of the older friend?
Q. The ratio of the lengths of two sides of a triangle is 3:4. If the perimeter is 70 cm, what is the length of the shorter side?
Q. The ratio of the speeds of two cars is 5:7. If the faster car travels 140 km in 2 hours, how far does the slower car travel in the same time?
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