This self-explanatory worksheet (which can be found here) contains a variety of questions involving ratios.

Answers are as follows:

1) 150 minutes (or 2 hours and 30 minutes)

2) 2½ litres of sauce.

3) 6 tomatoes

4) 6 fish

5) 20 fish

6) Five

7) 3 sweets

8) 3 tins

9) 8 chocolates

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