Question

For which statement is the unit rate equal to 8? A.)Lisa lost 8lbs in 8 weeks B.) Yi drove 400mi in 8 hrs C.)80 people in 10 rows at the movies D.)There are 100 shirts in 8 drawers PLS HALP!!!

Answer 1

C) The per unit rate of people in each row = 8

Explanation:

UNIT RATE: unit rate is defined as the rate per one unit.

Now, here, the unit rate = 8

A.)Lisa lost 8 lbs in 8 weeks.

So, the loss per week =
`\frac{\textrm{Amount of Loss}}{\textrm{Number of weeks}}  = (8)/(8)`

= 1 ⇒ Per Unit Loss = 1 lbs

B.) You drove 400 mi in 8 hrs.

So,the distance covered per hour =
`\frac{\textrm{Total distance covered}}{\textrm{Number of hours}}  = (400)/(8)`

= 50 ⇒ Per hour travel = 50 miles

C.)80 people in 10 rows at the movies

So,the number of people per row =
`\frac{\textrm{Total number of people}}{\textrm{Number of rows}}  = (80)/(10)`

= 10 ⇒ Number of people per row = 8 people

D.)There are 100 shirts in 8 drawers

So,the number of shirts per drawer =
`\frac{\textrm{Total number of shirts}}{\textrm{Number of drawers}}  = (100)/(8)`

= 12.5 ⇒ Number of shirts per drawer = 12. 5 shirts

Hence, the per unit rate of people in each row = 8