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

### Instruction:
Janet is considering two options to retile her bathroom. The turquoise tiles cost $13/tile and the purple tiles cost $11/tile. If Janet needs to tile two walls that measure 5 feet by 8 feet and 7 feet by 8 feet, and each square foot of wall takes 4 tiles, how much will Janet save by buying the purple tiles instead of the turquoise ones?

### Response:
 Ukuta wa kwanza una eneo la futi za mraba 40 na ukuta wa pili una eneo la futi za mraba 56.
Jumla ya eneo la futi za mraba ni 40 + 56 = <<40+56=96>>96.
Kila futi ya mraba inachukua vigae 4, hivyo jumla ya vigae inayohitajika ni 96 x 4 = <<96*4=384>>384 vigae.
Vigae vya rangi ya zambarau vina gharama ya $11/kigae, hivyo gharama jumla ni 384 x $11 = <<384*11=4224>>$4224.
Vigae vya rangi ya kijani ya bahari vina gharama ya $13/kigae, hivyo gharama jumla ni 384 x $13 = <<384*13=4992>>$4992.
Tofauti kati ya gharama hizo ni $4992 - $4224 = <<4992-4224=768>>$768.
Hivyo Janet ataokoa $768 kwa kununua vigae vya rangi ya zambarau badala ya vile vya rangi ya kijani ya bahari.