Question

Devarsh wants to buy shoes for a party. He finds one worth of 35$thatisonsalefor$40 $21$.Find the total cost if Devarsh buys $x$ shoes that are on sale and two socks.

• A. $C=14x+42$
• B. $C=21x+21$
• C. $C=21x+42$
• D. $C=35x+42$

Answer 1

The correct option is C $C=21x+42$

Given, Devarsh purchased $x$ shoes of worth of $\$35$ is on sale for $40\%$ off

And two that cost is $\$21$.

Then Devarsh paid amount for $x$ shoes $=$ $\frac{100-40}{100}\times 35\times x=\frac{60}{100}\times 35\times x=21x$$

And he paid amount for two socks $=$ $2\times 21=42$$

Then Devarsh paid total amount $C=21x+42$