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James had R145. After paying for 3 cards and some stamps, he had R15 left.

If each card cost R25 and each stamp cost R5, find the number of stamps he bought.


Sagot :

Let's solve this problem step-by-step:

1. Determine the total amount spent by James:
- James started with R145 and ended with R15 left.
- Therefore, the total amount spent is:
[tex]\[ 145 - 15 = R130 \][/tex]

2. Calculate the cost of the 3 cards:
- Each card costs R25.
- For 3 cards, the total cost is:
[tex]\[ 3 \times 25 = R75 \][/tex]

3. Determine the amount spent on stamps:
- The total amount spent was R130 and the cost of the cards was R75.
- Therefore, the amount spent on stamps is:
[tex]\[ 130 - 75 = R55 \][/tex]

4. Calculate the number of stamps bought:
- Each stamp costs R5.
- The number of stamps bought with R55 is:
[tex]\[ 55 \div 5 = 11 \][/tex]

Thus, James bought 11 stamps.