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

### Instruction:
Yesterday, Sarah collected 50 aluminum cans while Lara collected 30 more aluminum cans. Today, Sarah collected 40 while Lara collected 70 aluminum cans. How many fewer cans did they collect today than yesterday?

### Response:
 Jana, Lara alikusanya makopo ya alumini 50 + 30 = <<50+30=80>>80.
Hivyo, Sarah na Lara walikusanya jumla ya makopo ya alumini 50 + 80 = <<50+80=130>>130 jana.
Leo, Lara alikusanya makopo ya alumini 70 - 40 = <<70-40=30>>30 chache.
Hivyo, Sarah na Lara walikusanya jumla ya makopo ya alumini 40 + 70 = <<40+70=110>>110 leo.
Hivyo, walikusanya makopo ya alumini 130 - 110 = <<130-110=20>>20 chache leo kuliko jana.