PSLE A shop had a number of tablets for sale. After selling 16 of them in the morning and
512 of the remainder in the afternoon, it was left with
12 of the tablets. How many tablets were sold altogether?
Morning |
Remainder |
|
Afternoon |
Left |
16 |
5x1 |
7x1 |
1x7 |
1x7 |
2 u |
5 u |
7 u |
Fraction of the remainder left
= 1 -
512 =
712 7x112x1 Remainder =
1x72x7 Total
712 Remainder =
714 Total
Number of tablets sold in the morning
= 7 u - 5 u
= 2 u
2 u = 16
1 u = 16 ÷ 2 = 8
Number of tablets sold in the afternoon
= 5 u
= 5 x 8
= 40
Answer(s): 40