Asked by Lisa

Laura wants the average amount of money she spends in four days to be no more than $64. On the first three days she spends $71, $62 and $59. What is the greatest amount she can spend on day 4?
Answered by PsyDAG
mean = ∑x/n

64 = (71+62+64+x)/4

Solve for x.
Answered by Rag
59