book Maths Puzzle Numerical Ability

A cyclist bikes 12 miles due west of her house before changing direction. She travels north an additional 16 miles. If she bikes home on the most direct path back to her house, how many miles must she travel?

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when Y=6


5y or y+19
: It takes Steven 8 hours to clean the yard and mow the lawn. He and his brother Daniel can do the same job in 3 hours when they work together. How long does it take Daniel to d