Question

There are 268 cars, lorries and motorcycles in a car park.

There are 3 times as many cars as lorries.
There are 20 motorcycles.
(a) How many cars and lorries are there?
(b) How many lorries are there?

Answer 1

(a)

We know how many motorcycles are there, so the number of cars and lorries is the difference in the total number of cars, lorries, motorcycles and motorcycles

268-20=248.

So there are 248 cars and lorries

Answer: 248 cars and lorries

(b)

Let the number of lorries be x, then the number of cars is 3x. There are 248 cars and lorries in total.

Now we can make an equation

`x + 3x = 248 \\ 4x = 248 | / 4 \\ x = 62`

So on the park there are 62 lorries. Then the number of cars is

`3 * 62 = 186`

Answer: There are 62 lorries and 186 cars

Answer 2

cars=186 lorries=62

Explanation:

total vehicles=268

cars=3 x lorries

motorcycle=20

lories=?

number of cars and lorries=268-20/4

=62

cars=62 x 3 = 186

lorries=62

hope this helps u =)