Andy, Neave and Ben sold some notebooks. Ben sold 10% of the total number of notebooks sold by Neave and Andy. Andy sold 25% of the total number of notebooks sold by Neave and Ben. Andy sold 140 less notebooks than Neave. Find the total number of notebooks sold by all the boys.
| Andy |
Neave |
Ben |
Total |
| 10x5 |
1x5 |
11x5 |
| 1x11 |
4x11 |
5x11 |
| 11 u |
39 u |
5 u |
55 u |
10% =
10100 =
110 25% =
25100 =
14 The total number of notebooks is repeated. Make the total number of notebooks the same. LCM of 11 and 5 is 55.
Number of less notebooks that Andy sold than Neave
= 39 u - 11 u
= 28 u
28 u = 140
1 u = 140 ÷ 28 = 5
Total number of notebooks sold
= 55 u
= 55 x 5
= 275
Answer(s): 275
