Answer:
50
Step-by-step explanation:
They need to sell 50 of them in order to raise $1000. Its simple math all you have to do is divide 1000 by 20 and poof you have the answer.
Answer:
0.45
Step-by-step explanation:
Divide 9 by 20.
Reduced by half = 200cm/50 seconds.
20000/50 = 400.
200 x 400 = 80,000cm