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

### Instruction:
Mr. Isaac rides his bicycle at the rate of 10 miles per hour for 30 minutes. If he rides for another 15 miles, rests for 30 minutes, and then covers the remaining distance of 20 miles, what's the total time in minutes took to travel the whole journey?

### Response:
 Ikiwa kwa saa moja anafunika maili 10 na anaendesha kwa maili 15 kwa kasi ya maili 10 kwa saa, basi muda uliotumika kwa maili 15 utakuwa 15/10=<<15/10=1.5>>1.5 saa.
Muda kwa dakika ni 1.5*60=<<1.5*60=90>>90 dakika.
Ikiwa anafunika maili zilizosalia kwa kasi ya maili 10 kwa saa, basi muda uliotumika utakuwa 20/10=<<20/10=2>>2 saa.
Muda kwa dakika ni 2*60=<<2*60=120>>120 dakika.
Muda jumla uliotumika kwa safari nzima ni dakika 30 za kwanza + 90 + dakika 30 za kupumzika + 120 dakika = <<30+90+30+120=270>>270 dakika.