PSLE A shop had a number of mobile phones for sale. After selling 66 of them in the morning and
17 of the remainder in the afternoon, it was left with
13 of the mobile phones. How many mobile phones were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
66 |
1x1 |
6x1 |
2x6 |
1x6 |
11 u |
1 u |
6 u |
Fraction of the remainder left
= 1 -
17 =
67 6x17x1 Remainder =
1x63x6 Total
67 Remainder =
618 Total
Number of mobile phones sold in the morning
= 12 u - 1 u
= 11 u
11 u = 66
1 u = 66 ÷ 11 = 6
Number of mobile phones sold in the afternoon
= 1 u
= 1 x 6
= 6
Answer(s): 6