A teacher bought 12 boxes of crayons, 7 boxes had 9 crayons in them and the other boxes had 10 crayons. The total number of individual crayons she has is?
A
95
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B
113
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C
121
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Solution
The correct option is B113 Total number of boxes of crayons =12.
Number of boxes with 9 crayons =7
And, Number of boxes with 10 crayons =12−7=5
So, total number of individual crayons =7×9+5×10 =63+50=113 crayons.
So, the teahcer had 113 crayons in total with her.