TSI Lesson 3

A school was taking a field trip. The principal wanted 2 teachers for every 45 students. If 270 students will be attending the trip, how many teachers must chaperone? (Set up a proportion to solve this problem.)

• 100

• 8 

• 12 

• 50

Terrance realized that he had only traveled 22% of his 450 mile trip. How far has Terrance traveled?

• 63 miles

• 99 miles

• 150 miles

• 70 miles

A mechanic borrowed $7800 from his uncle to build a shed next to his shop. He repaid his uncle after 1.5 years at 7.5% simple interest. What total amount did the mechanic pay his uncle?

• $8677.50

• $9,125.00

• $7,900.00

The population of a town is 25,000 people. If 35% of the people in this town are under the age of 10, then how many people would that be?

• 9,550

• 7,450

• 8,750

• 3,500

In 14-karat gold jewelry, 14 out of 24 parts are real gold. What percent of a 14K gold ring is real gold?

• 55.4%

• 74.2%

• 14%

• 58.3%

When Samuel asked to borrow $1000, his dad told him he must pay it back in 6 months and he will be charged 12% interest. How much interest will Samuel have to pay?

• $60

• $100

• $45

• $75