Question

Solve the problem.

During the first four months of the year, Jack earned $1190, $1070, $1190 and $1400. If Jack
must have an average salary of at least $1240 in order to earn retirement benefits, what
must Jack earn in the fifth month in order to qualify for benefits?
at least $1350
O at most $1213
at most $1240
O at least $1218

Answer 1

Answer: most 1240 $

Explanation:

• Let's denote his salary for the last month for x
• and we also know:
• (1190+1070+1190+1400+ x) : 5= 1240
• 4850+x=1240*5
• 4850+x=6200
• x=6200-4850
• x=1350

• 1350 > 1240 => most 1240 $