exam Maths Puzzle Numerical Ability

-25+4(2x-5)=-61

Read Solution (Total 0)

exam Other Question

Subtract and express in simplest form:
2x/x-5 - 10/x-5
Thanks all!
CH Two classes, one with 50 students and the other with 30, take the same exam. The combined average of both classes is 84.5. If the larger class averages 80, what is the average of the smaller class?