H2)
Celine earned $525 more than Abbas each month. They each spent $1250
a month and saved the rest. After 11 months, Celine had $8250 in savings.
How much did Abbas earn in a year?
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Abbas earned in a year Ea = $ 17 700
Let's say that:
Ec = Ea + $ 525 => monthly
Xc = $ 1 250
Ec: Celine ́s earnings (monthly)
Xc: Celine’s expenses (monthly)
Ea: Abbas’ earnings (monthly)
On month # 11 => Sc = (Ec - Xc)(11) => $ 8 250 = (Ec - Xc)(11)
Sc: Celine’s savings
$ 8 250 = (Ec - Xc)(11)
$ 8 250 = (Ea + $ 525 - $ 1 250)(11)
$ 750 = Ea - $ 725
Ea = $ 1 475 (monthly)
Ea = $ 17 700 (year)
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