Tom, Ivan and Howard sold some pens. Howard sold 40% of the total number of pens sold by Ivan and Tom. Tom sold 20% of the total number of pens sold by Ivan and Howard. Tom sold 48 less pens than Ivan. Find the total number of pens sold by all the boys.
| Tom |
Ivan |
Howard |
Total |
| 5x6 |
2x6 |
7x6 |
| 1x7 |
5x7 |
6x7 |
| 7 u |
23 u |
12 u |
42 u |
40% =
40100 =
25 20% =
20100 =
15 The total number of pens is repeated. Make the total number of pens the same. LCM of 7 and 6 is 42.
Number of less pens that Tom sold than Ivan
= 23 u - 7 u
= 16 u
16 u = 48
1 u = 48 ÷ 16 = 3
Total number of pens sold
= 42 u
= 42 x 3
= 126
Answer(s): 126
