exam Maths Puzzle Numerical Ability

IF IT TAKES SALLY 4 HOURS TO PAINT A HOUSE AND IT TAKES JOHN 6 HOURS TO PAINT THE SAME HOUSE, HOW LONG WOULD IT TAKE THEM TO PAINT THE SAME HOUSE TOGETHER.

ANSWER: 2 HOURS AND 24 MINUTES

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exam Other Question

explain the similarities between radicals and rational exponent notation?

Provide two other examples of mathematical notation or wording denoting the same process

help could someone explain this to me in english my problem is that maria drove from providence to new hampshire in 1.5 hours. if the distance is 110 miles how fast was she travleing the answer is 73 mph but i want to know how to graph that ?