Question

a painter can paint a Wall of 300 square metre in 15 hour if he worked at constant speed how much time taken to paint 20 square metre wall​

Answer 1

Answer:

1 hours

Step-by-step explanation:

300=15then

20=?then cross multification

so 20×15÷300=1

Answer 2

Step-by-step explanation:

Given

Time taken by painter to paint a wall of 300 metre of square wall = 15 hours

Time required to paint 1 metre of square wall = 15/300 = 1/20 hours = 3 minutes

Therefore,

Time required to paint 20 metre of square wall = 20×3 minutes = 60 minutes....