Page 119 - NUMINO Challenge_B2
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Type 13-2 Number of Broken Mirrors
Tim works in a factory, moving mirrors. He receives $10 for every
mirror he moves, but has to pay $15 for every mirror he breaks.
If Tim moved 40 mirrors and received $200, how many mirrors did he
break?
1 How much money would Tim have received if he had moved all 40 mirrors
without breaking a single one?
2 What was the difference between the amount of money he could have
received and the amount of money he actually received?
3 Every time Tim breaks a mirror, he must pay $15 instead of receiving $10.
What is the difference between the two cases?
4 Use the results from 1 and 3 to find how many mirrors Tim broke.
5 John works in the same factory and received $175 for moving 30 mirrors.
How many mirrors did John break?
116 NUMINO Challenge B2
Tim works in a factory, moving mirrors. He receives $10 for every
mirror he moves, but has to pay $15 for every mirror he breaks.
If Tim moved 40 mirrors and received $200, how many mirrors did he
break?
1 How much money would Tim have received if he had moved all 40 mirrors
without breaking a single one?
2 What was the difference between the amount of money he could have
received and the amount of money he actually received?
3 Every time Tim breaks a mirror, he must pay $15 instead of receiving $10.
What is the difference between the two cases?
4 Use the results from 1 and 3 to find how many mirrors Tim broke.
5 John works in the same factory and received $175 for moving 30 mirrors.
How many mirrors did John break?
116 NUMINO Challenge B2
