During the summer holidays,your brother earns extra money mowing lawns.He mows 6 lawns an hour and has 21 lawns to mow.How long will it take him?

He mows 6 lawns in one hour so you have to divide the number of lawns he mows in total by the number he can mow in one hour. Hopefully this helps.

21 / 6 = 3.5 hours

Six of the classes at your school are going to the pool for a swimming party. That means 125 students need to get on buses and each bus hold 48 students. How many buses will the school need?

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To figure out how long it will take your brother to mow all 21 lawns, we need to divide the total number of lawns (21) by the number of lawns he mows per hour (6).

Here's how we can calculate it step by step:

1. Start with the total number of lawns (21).
2. Divide the total number of lawns by the number of lawns mowed per hour (6).
- 21 ÷ 6 = 3.5
3. The result, 3.5, represents the number of hours it will take your brother to mow all 21 lawns.

However, since your brother cannot partially mow a lawn (he can only mow whole lawns), we need to consider that he may need additional time to finish the last partially mowed lawn. In this case, it would take an extra 0.5 hours.

Therefore, it will take your brother around 3.5 hours to mow all 21 lawns during the summer holidays.

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