9 workers
7 workers can make 210 pairs of cup in 6 days, so:
1 worker can make 30 pairs of cup in 6 days, so:
1 worker can make 5 pairs of cup in 1 day.
Using this info, because
the workers need to make 450 pairs of cup in 10 days,
they need to make 45 pairs of cup in 1 day,
each worker can make 5 pairs of cup in 1 day,
so 45/5 = 9 workers
voila!
Trình bày các chỉ tiêu tính chất vật lý của đất
Answer:
d =120
Explanation:
v =d/t
2 hours=120 minutes
10=d/120
cancel the zero in 10 and 120
d =12km
hope this helps you
