Respuesta :
Answer:
$20.00
Step-by-step explanation:
Cost price of the bicycle paid by Mr. Katz = $50
Selling price of the bicycle = $6
Money earned by Ms. Katz = 60 - 50
= $10
She purchased it again at the price = $70
and sold it again at the price = $80
Money earned by her = selling price - cost price
= 80 - 70
= $10
She earned the profit = (10+10) = $20