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The cost of 15 pens is Rs.375. Find, how...

The cost of 15 pens is Rs.375. Find, how many pens can be bought for Rs. 800.

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To solve the problem step by step, we can follow these instructions: ### Step 1: Understand the given information We know that the cost of 15 pens is Rs. 375. ### Step 2: Find the cost of one pen To find the cost of one pen, we divide the total cost by the number of pens: \[ \text{Cost of 1 pen} = \frac{\text{Total Cost}}{\text{Number of Pens}} = \frac{375}{15} \] ### Step 3: Calculate the cost of one pen Now, we perform the division: \[ \text{Cost of 1 pen} = \frac{375}{15} = 25 \] So, the cost of one pen is Rs. 25. ### Step 4: Find how many pens can be bought for Rs. 800 Now, we need to find out how many pens can be bought with Rs. 800. We can do this by dividing the total amount of money by the cost of one pen: \[ \text{Number of pens} = \frac{\text{Total Money}}{\text{Cost of 1 pen}} = \frac{800}{25} \] ### Step 5: Calculate the number of pens Now, we perform the division: \[ \text{Number of pens} = \frac{800}{25} = 32 \] Thus, 32 pens can be bought for Rs. 800. ### Final Answer The number of pens that can be bought for Rs. 800 is **32 pens**. ---
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ICSE-DIRECT AND INVERSE VARIATIONS-EXERCISE 10 (E)
  1. The cost of 15 pens is Rs.375. Find, how many pens can be bought for R...

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  2. A can do a piece of work in 10 days and B in 15 days. How long will th...

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  3. A and B together can do a piece of work in 6(2)/(3) days, but B along ...

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  4. A can do a work in 15 days and B in 20 days. If they work together on ...

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  5. A, B and C can do a piece of work in 6 days, 12 days and 24 days resp...

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  6. A and B working together can mow a field in 56 days and with the help ...

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  7. A can do a piece of work in 24 days, A and B can do it in 16 days and ...

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  8. A can do a piece of work in 20 days and B in 15 days. They worked toge...

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  9. A can finish a piece of work in 15 days and B can do it in 10 days. Th...

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  10. A can do a piece of work in 10 days, B in 18 days and A, B and C toget...

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  11. A can do (1)/(4) of a work in 5 days and B can do (1)/(3) of the same ...

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  12. One tap can fill a cistern in 3 hours and the waste pipe can empty the...

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  13. A and B can do a work in 8 days, B and C in 12 days, and A and C in 16...

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  14. A and B complete a piece of work in 24 days, B and C do the same work ...

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  15. A and B complete a piece of work in 24 days, B and C do the same work ...

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  16. A and B complete a piece of work in 24 days, B and C do the same work ...

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  17. A and B can do a piece of work in 40 days, B and C in 30 days, and C a...

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  18. A and B can do a piece of work in 40 days, B and C in 30 days, and C a...

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  19. A can do a piece of work in 10 days, B in 12 days and C in 15 days. Al...

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  20. Two pipes P and Q would fill an empty cistern in 24 minutes and 32 min...

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