Answer:
1. $50
2. $144
3. $425
4. $617.5
Step-by-step explanation:
1. Original price (P) = $40 and markup (r) = 25%
So, the original price will increase by 25%.
Hence, the new price after markup will be [tex]= P + P \times \frac{r}{100}[/tex]
= [tex]P[1+\frac{r}{100} ][/tex]
= [tex]40[1+\frac{25}{100} ][/tex]
= [tex]40[1.25][/tex]
= $50 (Answer)
2. Similarly, if original price = $90 and markup = 60%, then the new price after markup will be
= [tex]90[1+\frac{60}{100} ][/tex]
= 90 × 1.6
= $144 (Answer)
3. Similarly, if original price = $250 and markup = 70%, then the new price after markup will be
= [tex]250[1+\frac{70}{100} ][/tex]
= 250 × 1.7
= $425 (Answer)
4. Similarly, if original price = $475 and markup = 30%, then the new price after markup will be
= [tex]475[1+\frac{30}{100} ][/tex]
= 475 × 1.3
= $617.5 (Answer)
