Oscar, Jenson and Harry sold some notebooks. Harry sold 30% of the total number of notebooks sold by Jenson and Oscar. Oscar sold 25% of the total number of notebooks sold by Jenson and Harry. Oscar sold 72 less notebooks than Jenson. Find the total number of notebooks sold by all the boys.
| Oscar |
Jenson |
Harry |
Total |
| 10x5 |
3x5 |
13x5 |
| 1x13 |
4x13 |
5x13 |
| 13 u |
37 u |
15 u |
65 u |
30% =
30100 =
310 25% =
25100 =
14 The total number of notebooks is repeated. Make the total number of notebooks the same. LCM of 13 and 5 is 65.
Number of less notebooks that Oscar sold than Jenson
= 37 u - 13 u
= 24 u
24 u = 72
1 u = 72 ÷ 24 = 3
Total number of notebooks sold
= 65 u
= 65 x 3
= 195
Answer(s): 195
