exam
Maths Puzzle
Numerical Ability
sally can paint house in 4 hrs and john in 6 hrs, how long together?
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Problem Solving: How to solve:
Supppose you have 10 coins that total $0.85. Some coins are dimes and others are nickels. How many of each do you have????
-12h = 48
-12h = 48
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-12 -12
h = -4
is this correct....Thanks