exam Maths Puzzle Numerical Ability

2^(x-1)=64

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exam Other Question

3w-1 - 2-w - w (these are the numerators)
2w^2 + w-3 w-1 1-w (these are the denominators)

Here's what I have but it seemed too easy! Is this THE RANDOLPHS USED 12 MORE GALLONS OF FUEL OIL IN OCTOBER THAN IN SEPTEMBER AND TWICE AS MUCH OIL IN NOVEMBER AS IN SEPTEMBER. IF THEY USED 132 GALLONS FOR THE THREE MONTHS, HOW MUCH WAS USED DURING EACH MONTH?

THANKS FOR ANY HELP.