Japheth, Brandon and Oliver sold some pens. Oliver sold 40% of the total number of pens sold by Brandon and Japheth. Japheth sold 30% of the total number of pens sold by Brandon and Oliver. Brandon sold 180 more pens than Oliver. Find the total number of pens sold by all the boys.
| Japheth |
Brandon |
Oliver |
Total |
| 5x13 |
2x13 |
7x13 |
| 3x7 |
10x7 |
13x7 |
| 21 u |
44 u |
26 u |
91 u |
40% =
40100 =
25 30% =
30100 =
310 The total number of pens is repeated. Make the total number of pens the same. LCM of 7 and 13 is 91.
Number of more pens that Brandon sold than Oliver
= 44 u - 26 u
= 18 u
18 u = 180
1 u = 180 ÷ 18 = 10
Total number of pens sold
= 91 u
= 91 x 10
= 910
Answer(s): 910
