PSLE A shop had a number of mobile phones for sale. After selling 150 of them in the morning and
19 of the remainder in the afternoon, it was left with
13 of the mobile phones. How many mobile phones were left?
Morning |
Remainder |
|
Afternoon |
Left |
150 |
1x1 |
8x1 |
2x8 |
1x8 |
15 u |
1 u |
8 u |
Fraction of the remainder left
= 1 -
19 =
89 8x19x1 Remainder =
1x83x8 Total
89 Remainder =
824 Total
Number of mobile phones sold in the morning
= 16 u - 1 u
= 15 u
15 u = 150
1 u = 150 ÷ 15 = 10
Number of mobile phones left
= 8 u
= 8 x 10
= 80
Answer(s): 80