A scientist counts 155 bacteria in a dish. Later, the scientist counts again and finds the number as increased by 40%. How many bacteria are there now?

• 62 bacteria

• 217 bacteria

• 93 bacteria

• 115 bacteria

Tags

CCSS.6.RP.A.3C

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter?

• 35%

• 25%

• 30%

• 20%

Tags

CCSS.6.RP.A.3C

Mrs. Ciampa had 27 students in her class last year and this year she had 30 students in her math class. What is the percent of change?

• 24%
• 20%
• 11%
• 50%

Tags

CCSS.6.RP.A.3C

Greg wants to lose 10% of his body weight. If he weighs 320 pounds what is Greg's goal weight?

• 288 pounds

• 352 pounds

• 310 pounds

• 32 pounds

Tags

CCSS.6.RP.A.3C

Find the percent change from 40 to 38.

• 5% decrease

• 5% increase

• 5.3% decrease

• 5.3% increase

Tags

CCSS.6.RP.A.3C

Find the percent change from 28 to 42.

• 50% decrease

• 50% increase

• 33% decrease

• 33% increase

Tags

CCSS.6.RP.A.3C

An airplane flight is scheduled to take 2.5 hours. The actual flying time can change by 15% of that amount. What are the shortest and longest times for the airplane flight? Round your answers to the nearest tenth of an hour.

• 2.1 to 2.9 hours

• 0 to 2.3 hours

• 2 to 3 hours

• 2.3 to 2.7 hours

Tags

CCSS.6.RP.A.3C