There were some cars, buses and lorries.
35 of the total vehicles were cars and buses. There were 80 lorries and four times as many cars as buses. How many more cars than buses were there?
| Cars |
Buses |
Lorries |
| 3x5 |
2x5 |
| 4x3 |
1x3 |
|
| 12 u |
3 u |
10 u |
The total number of cars and buses is repeated. Make the total number of cars and buses the same. LCM of 3 and 5 is 15.
Number of lorries = 10 u
10 u = 80
1 u = 80 ÷ 10 = 8
Number of more cars than buses
= 12 u - 3 u
= 9 u
= 9 x 8
= 72
Answer(s): 72
