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Maths Puzzle
Numerical Ability
Jim rode his bike to school at an average rate of 8mp. On his return trip home, he averaged 6mph. If the total trip took 7 hours, how far is it from home to school
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book Other Question
simplfy the expression
(6ax^4)^2(2x)-2
I got 9a^2 x^4 but was told i was incorrect or course i also got
9a^2 x^6 so was i right the first time.?
thanks
A 1000 L tank now contains 240 L of water. How long will it take to fill the tank using a pump that pumps 25 L per minute?