swagmastercaillou

c+j =784

left money 

${5c \over 6}\frac{}{}$ = j- 124

${5c \over 6}\frac{}{}$=784-c-124

${11c \over 6}\frac{}{}$=660

c=360 (ans)

This question was answered here

https://web2.0calc.com/questions/math_54780

Bought price:

$160 / 20 pounds = $8 / pound

Sold price = $10 / pound

Profit:

( 10 - 8 ) / 8 = 2 / 8 = 2 ∙ 1 / 2 ∙ 4 = 1 / 4 = 0.25

0.25 ∙ 100% = 25 %

2/3x = 60

x = 90

5/7x =90

solve for x here

Thx

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