exam Maths Puzzle Numerical Ability

A cyclist bikes x distance at 10 mph and returns over the same path at 8 mph. What is the cyclists average rate for the round trip in miles per hour.

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exam Other Question

Find the missing polynomials.

(5a^3-3a^2b+ab^2+b^3)+(a^3+a^2b+4ab^2+b^3)+ (unknown) =3a^3-2a^2b+ab^2-2b^3
I have a total of 4 questions I need help on, & thank you guys in advance.

. Suppose you have a lemonade stand, and when you charge $1 per cup of lemonade you sell 50 cups. Bu