exam
Maths Puzzle
Numerical Ability
Find the area of a parallelogram with base 10 and corresponding height 4.
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exam Other Question
find 2 consecutive odd integers whose sum is 65.
ok, here we go.
John and Harry can paint a house in 10 days. when working alone John can paint the house in 30 days. How many days will it take Harry to paint the house.
I have no idea how to do this probolem.