Mathematics 0580 · IGCSE · Rates

Rates — practice question

In 15 minutes, Enzo, Rashid and Blessy each complete as many lengths of a swimming pool as they can. Their results are listed in the table.
(a(i))[2]

Find Enzo’s number of lengths as a percentage of the combined number of lengths swum by all three people.

(a(ii))[2]

Write the ratio of the number of lengths completed by each person in the order Enzo : Rashid : Blessy. Give it in its simplest form.

(a(iii)(a))[3]

Work out Blessy’s average speed over the 15 minutes. Give your answer in metres per second.

(a(iii)(b))[4]

Calculate the time Rashid needs to swim a total of 5 km. Give your answer in hours and minutes.

(a(iv))[3]

Calculate the number of lengths she swims during the final 15 minutes.

(b)[3]

Calculate the minimum distance Adam covers in one hour at this speed.

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