Question

7 friends go paintballing. They each have 300 paintballs. The paintballs cost £7.20 for 100. Calculate the total cost of the paintballs. Give your answer in pounds £.

Answer 1

The total cost of paintballs for 7 friends is £151.20. This was calculated by first finding the cost of 300 paintballs for one person (£21.60), and then multiplying this cost by 7.

Step-by-step explanation:

To calculate the total cost of the paintballs for 7 friends who each have 300 paintballs, we first find out the cost for 100 paintballs and then scale it up to 300 paintballs for one person. The problem states that 100 paintballs cost £7.20. To find the cost for 300 paintballs, we multiply the cost of 100 paintballs by 3 (since 300 is 3 times 100).

Cost for 300 paintballs for one person = 3 × £7.20 = £21.60.

Now we multiply the cost for one person by 7 to get the total cost for all friends:

Total cost for 7 friends = 7 × £21.60 = £151.20.

Therefore, the total cost of the paintballs for 7 friends is £151.20.

Answer 2

To calculate the total cost of the paintballs, multiply the number of paintballs by the cost per paintball.

Step-by-step explanation:

To calculate the total cost of the paintballs, we first need to determine the number of paintballs each friend has. Since each friend has 300 paintballs, the total number of paintballs is 7 * 300 = 2100 paintballs.

Next, we need to calculate the cost per paintball. The cost of 100 paintballs is £7.20, so the cost per paintball is £7.20/100 = £0.072.

Finally, we can calculate the total cost of the paintballs by multiplying the total number of paintballs by the cost per paintball: 2100 * £0.072 = £151.20.