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

### Instruction:
Alexander was 50 inches on his 8th birthday. If he grows 1/2 a foot a year, how many inches tall will he be on his 12th birthday?

### Response:
 Aliongeza inchi 24 kati ya siku ya kuzaliwa ya 8 na 12 kwa sababu 4 x 6 = <<4*6=24>>24
Atakuwa na urefu wa inchi 74 kwa sababu 50 + 24 = <<50+24=74>>74