exam
Maths Puzzle
Numerical Ability
the answer i got for the following is 20/27. I dont think is right though. The problem is -2(5x+3)=7(3-5x)is > or = to 4(4-3x)-3(7+2x).
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exam Other Question
if there are 6*10^9 people on the earth and there is enough freshwater to provide each person with 8.79*10^5 L, how much freahwater is on the earth?
Please help
Find the sum of 3-2x-5xsquared and 7xsquared-4 in simplest form.