a home goods store purchased a desk lamp and marked it up 155% from the original cost of $9.12. then…
a home goods store purchased a desk lamp and marked it up 155% from the original cost of $9.12. then, wanting to make room for summer inventory, the store placed the desk lamp on sale for 30% off. what was the price after the discount?
Answer
Explanation:
Step1: Calcular el precio después del aumento
El aumento es del 155% del costo original de $9.12. El factor de aumento es $1 + 1.55=2.55$. El precio después del aumento es $9.12\times2.55$. $9.12\times2.55 = 9.12\times(2 + 0.5+0.05)=9.12\times2+9.12\times0.5 + 9.12\times0.05=18.24+4.56 + 0.456 = 23.256$.
Step2: Calcular el precio después del descuento
El descuento es del 30%, entonces el factor de descuento es $1 - 0.3 = 0.7$. El precio después del descuento es $23.256\times0.7$. $23.256\times0.7=16.2792\approx16.28$.
Answer:
$16.28$