David earned $870 less than Jay each month. Both of them spent $2370 each month and saved the rest of their salaries. After a few months, David saved $1290 and Jay saved $2610.
- How much did David earn each month?
- David wanted to go on a trip that would cost him $5590. How many months did he have to save?
(a)
Amount that Jay saved more than David each month = $870
Total amount that Jay saved more than David
= 2610 - 1290
= $1320
Number of months that each of them earned
= 1320 ÷ 440
= 3
Amount that David's savings each month
= $1290 ÷ 3
= $430
Amount that David earned each month
= 2370 + 430
= $2800
(b)
Remaining amount that Jay had to save
= 5590 - 1290
= $4300
Number of more months that Jay needed to save
= 4300 ÷ 430
= 10
Answer(s): (a) $2800 ; (b) 10