In a car park, there are 38 convertibles and motorbikes. If there are 110 wheels altogether, how many motorbikes are there?
Number of
convertibles |
Wheels of
convertibles |
Number of
motorbikes |
Wheels of
motorbikes |
Total
wheels |
| 38 |
38 x 4 = 152 |
0 |
0 |
152 |
| 37 |
37 x 4 = 148 |
1 |
1 x 2 = 2 |
150 |
| 17 |
17 x 4 = 68 |
21 |
21 x 2 = 42 |
110 |
Total number of wheels if all the vehicles are convertibles
= 38 x 4
= 152
Big difference between the number of wheels between the convertibles and the motorbikes
= 152 - 110
= 42
Small difference between the number of wheels between a convertible and a motorbike
= 4 - 2
= 2
Number of motorbikes
= 42 ÷ 2
= 21
Answer(s): 21
