puz-maths-puzzles-01
Subtract the two sales one after the other, then re-read exactly what the question asks you to report.
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Subtract the two sales one after the other, then re-read exactly what the question asks you to report.
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Ask how much of the fence each painter finishes in one hour, then combine those fractions.
Set the price at 100 and follow it through both changes, watching which figure each percentage is taken from.
Reversing a two-digit number changes it by nine times the difference between its digits.
Divide by 7 and use nothing but the remainder.
The classes are different sizes, so the two means cannot simply be averaged.
Both purchases contain exactly the same number of bowls; use that to make the bowls disappear.
It is far quicker to work out the chance of drawing no yellow at all, then take that away from 1.
Treat the two cookery books as a single item, then remember they can still swap places inside it.
Time each leg separately with distance divided by speed, converting the decimal part of an hour with care.
Multiply by 1.5 once for each week rather than adding the same amount each time.
Each department has to be judged against its own application total, not against the whole hiring round.
Take the remainder off first and look for the smallest number all three divisors go into exactly.
List every whole number of the dearer item that fits inside the budget, then test each case against the remaining condition.
Each fraction applies to what is left at that stage, not to the amount you started with.