Monday, May 24, 2010

Percentage P6

Mr.Wong had 207 apples and oranges. After he had sold 50% of the apples and 40% of the oranges,he had 45 more oranges than apples left.how many fruits did he have left?


                    
   [][][][][][][][][][][][]
A [      ][      ] <45><45>    )
            <45>                    ) 207
O [][][][][][] [][][][]        )

22 u --> 207 + 45 +45 = 297
1 u --> 297 ÷ 22 = 13.5

12 u --> 12 x 13.5 = 162

162 - 45 = 117 fruits

He had 117 fruits left.

2 comments:

  1. Could you explain how the model is being drawn as it is quite uncertain to comprehend?

    ReplyDelete
  2. Before and After

    After,
    you are left with

    A [......]<45>
    B [][][][][][]

    What I have done -
    After A x 2, which is equal to Before A + 45 + 45.

    ReplyDelete