Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Prejean's speed in a race was three-quarters that of Rickey. If they both took a total of 70 minutes to run the race, calculate the total number of minutes that Rickey took to finish the race.

### Response:
 Hebu sema Rickey alitumia dakika t kukamilisha mbio.
Kwa kuwa kasi ya Prejean katika mbio ilikuwa theluthi tatu ya kasi ya Rickey, na Rickey alitumia dakika t kukamilisha mbio, Prejean alitumia 3/4 * t = (3/4) * t = 3/4t dakika kukamilisha mbio.
Pamoja, Rickey na Prejean walitumia t + 3/4t = 70 dakika kukamilisha mbio.
Hii ni sawa na 1 3/4t = 70.
(1 3/4) * t = 70
(7/4) * t = 70
t = 70 * (4/7) = 40 dakika
Rickey alitumia t = 40 dakika kukamilisha mbio.