A bicycle shop had 960 bicycles in stock. 45% of the bicycles were mountain bikes. The rest were road bikes or folding bikes.
- How many bicycles were NOT mountain bikes?
- Of the bicycles that were NOT mountain bikes, 14 were folding bikes. How many folding bikes were there?
Need a hint?
For (a), first find the mountain bikes, then take them away from the total. For (b), the fraction applies only to the 528, not to the 960.
Worked answer
- (a) Mountain bikes: 45% of 960 = 432.
- (a) Not mountain bikes: 960 − 432 = 528 bicycles.
- (b) Folding bikes: 14 of 528 = 528 ÷ 4 = 132.
Answer: 132 bicycles
The mistake this question tests
Habit
Fraction of a remainder
Many pupils find 45% of 960 (432) and stop there, or take 14 of 960 instead of of the remainder, which gives 240 instead of 132.
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