Meijun had some money. She used 1/4 of it on a watch and 1/6 of it on a gift. The watch and the gift cost $133.50 altogether.How much money had she left?
1/4 x 3/3 = 3/12
1/6 x 2/2 = 2/12
3 + 2 = 5
12 - 5 = 7
5 u --> 133.50
7 u --> 7/5 x 133.50 = $186.90
She had $186.90 left.
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As appeared in PSLE 2010 exam:
ReplyDeleteMeijun had some money. She used 1/4 of it on a watch and 1/6 of it on a gift. The watch and the gift cost $133.50 altogether.
How much money had she left?
$186.90
ReplyDelete