Question

19 workers can make 171 holes in a marble slab in an hour. How many holes could 21 workers make in an hour?
with proper statement and method​

Answer 1

Answer:

189 holes

Step-by-step explanation:

19 workers=171 holes

1 worker= 171/19

21 workers=171/19 × 21

=189 holes

Answer 2

Answer:

if 19workers do make 171 holes

then 1 worker could make 171/19= 9holes

21 workers could make = 9×21 = 189