Ahmad gave
110 of his cards to Howard,
19 of his remaining cards to Oliver and
18 of the rest of his cards to Archie. He then had 28 cards left. How many cards had he at first?
| Howard |
Remaining cards |
Total |
| 1 u |
9 u |
10 u |
| |
Oliver |
Rest of the cards |
|
| |
1 u |
8 u |
|
| |
|
Archie |
Left |
|
| |
|
1 u |
7 u |
|
| |
|
|
28 |
|
Number of cards that Ahmad had before = 10 u
Number of cards that Ahmad gave to Howard = 1 u
Number of cards that Ahmad gave to Oliver = 1 u
Number of cards that Ahmad gave to Archie = 1 u
Number of cards that Ahmad had left = 7 u
7 u = 28
1 u = 28 ÷ 7 = 4
Number of cards that Ahmad had at first
= 10 u
= 10 u x 4
= 40
Answer(s): 40
