Jen and Oscar received $804 in total from their father. After Jen spent ⁴₅ of her money and Oscar deposited ⁴₇ of his money into his savings account, Jen had four times as much money as Oscar.

1. Find the amount of money Jen received from her father.
2. If Oscar' savings increased by 25% after the deposit, how much was Oscar' savings in the bank in the end?

	Jen	Oscar	Total
Before	5x12 = 60 u	7 u	$804
Change	- 4x12 = - 48 u	- 4 u
After	1x12 = 12 u	3 u
Comparing Jen and Oscar in the end	4x3	1x3

Fraction of Jen's money left
= 1 - ⁴₅
= ¹₅

Fraction of Oscar's money left
= 1 - ⁴₇
= ³₇

The amount that Jen had in the end is repeated.  Make the amount that Jen had in the end the same. LM of 4 and 1 is 12.

Total amount given to Jen and Oscar
= 60 u + 7 u
= 67 u

67 u = 804

1 u = 804 ÷ 67 = 12

Amount that Jen received from her father
= 60 u
= 60 x 12
= $720

(b)
Amount that Oscar deposited
= 4 u
= 4 x 12
= $48

Savings that Oscar had at first = 100%

Savings that Oscar had in the end
= 100% + 25%
= 125%

25% of the savings = 48
1% of the savings = ⁴⁸₂₅
125% of the savings = 125 x ⁴⁸₂₅ = 240

Oscar's savings in the end = $240

Answer(s): (a) $720; (b) $240