Question

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?

Answer 1

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)