Question

There's an online tutoring service. It provides a demo one-hour free tutoring and after that, if a person signs up, $\$30$ per hour is charged for the first ten hours and after that, a discount is given to the user. If a client pays $\$664$ for $25$ hours of tutoring , what is the service's discounted hourly rate?

• A. $\$24.50$
• B. $\$25.54$
• C. $\$26.00$
• D. $\$26.56$

Answer 1

Answer: (C)

$\$26.00$

Given that tutoring service provided $1$ hour free and after ten hour he charged $\$30$ per hour

Client pays $\$664$ for $25$ hours.

Then Client pays in ten hours $=$ $10\times$30=$300$

Then Client pays in rest hours $=$ $\$664-\$300=\$364$

Then Client rest hours are $=25-10-1=14$

Then servicediscount $=$ $\frac{\$364}{14}=$26$