M4maths
exam Maths Puzzle Numerical Ability

Two cyclists, 91 mi apart, start riding towards each other at the same time. One cycles just as fast as the other. If they meet 3 hr later, at what average speed is each cyclist traveling?

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exam Other Question

Graph the line -4x+5y=20
I forgot how to do this, could you help :)
What is the LCM for the following
15b^8a^5, 3b^8a^7, 10b^7a^2