book Maths Puzzle Numerical Ability

-25d+10=15d

Read Solution (Total 0)

book Other Question

If you rent a car for one day and drive it 50miles, the cost is 45dollars. if you drive it 300 miles your cost is 120dollars. LetC(m) represent the cost, in doolars, of driving m A student has earned scores of 87, 81, and 88 on the first 3 of 4 tests. If the student wants an average (arithmetic mean) of exactly 87, what score must she earn on the fourth test?