Question

In a class the ratio of boys to girls is 4:3 30% of the boys are left handed. What fraction of all the people in the class are left handed boys.

Answer 1

Answer:

l=2b

h=4m

Area fof four walls A=2(l+b)h

⟹120=2×4(2b+b)

⟹b=5m

Area of floor=lb=2b.b=2b

2

=2×5

2

=50m

2