Question

pls answer it's urgent​

Answer 1

Answer:

number of workers required for the wall in 10hr=n

20/10,n/50

cross multiply

10n=20*50=1000

n=1000/10=100 workers

Answer 2

Answer:

20 workers = 50 hours

then; x workers = 10 hours

By cross multiplication

20 × 10

x = ------------

50

200

x = ------ = 4

50

Hence 4 workers are needed to complete the work in 10 hours.