A lamp and a bulb together cost £32. The lamp costs £30 more than the bulb. How much does the bulb cost?
A lamp and a bulb together cost £32. The lamp costs £30 more than the bulb. How much does the bulb cost?
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All my classes assumed this was dead easy and that the answer was £2-00."
Wednesday, January 31, 2007
Excellent, I would like to see more like this
Good, achieved the results I required
Satisfactory
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.
This starter has scored a mean of 4.3 out of 5 based on 68 votes.
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If that is the case, the lamp must cost £30 more than that which is £32.
That means the total cost would be £34... wrong,
think again.
Answer
The lamp costs £31
The bulb costs £1
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