Question

sam can prepare 20 wall paintings in four weeks. How much time will he need to prepare 80 wall paintings

Answer 1

20
4 = x
80

4x=1600
x= 1600/4
x=400

Answer 2

1st week= 20 walls

2nd week= 20+20=40 walls

3rd week= 20+20+20=60 walls

4th week= 20+20+20+20=80 walls

Therefore, in 4 weeks 80 walls in total will be painted