In a car park, there are 34 lorries and scooters. If there are 108 wheels altogether, how many scooters are there?
Number of lorries |
Wheels of lorries |
Number of scooters |
Wheels of scooters |
Total wheels |
34 |
34 x 4 = 136 |
0 |
0 |
136 |
33 |
33 x 4 = 132 |
1 |
1 x 2 = 2 |
134 |
20 |
20 x 4 = 80 |
14 |
14 x 2 = 28 |
108 |
Total number of wheels if all the vehicles are lorries
= 34 x 4
= 136
Big difference between the number of wheels between the lorries and the scooters
= 136 - 108
= 28
Small difference between the number of wheels between a lorry and a scooter
= 4 - 2
= 2
Number of scooters
= 28 ÷ 2
= 14
Answer(s): 14