18) store a: $25 for a 45 minute lesson store b: $30 for a 1 hour lesson store c: $45 for a 1.5 hour lesson store d: $80 for three 1 hour lessons julie wants to purchase swim lessons for her son. there are four different stores that offer swim lessons. based on the lowest cost per minute, which store has the best deal? a) store a b) store b c) store c d) store d

Store D has the best deal

Step-by-step explanation:

We will divide cost per minutes

Store A: $25 for a 45 minute lesson

$25/45 minutes

$.5555555  per minute

Store B: $30 for a 1 hour lesson

1 hour = 60 minutes

$30/60  

$.5 per minute

Store C: $45 for a 1.5 hour lesson

1.5 hours* 60 minutes/ hour = 90 minutes

$45/ 90

$.5 per minute  

Store D: $80 for three 1 hour lessons

3 * 1 hour = 3 hours

3 hours * 60 minutes/ 1 hour = 180 minutes

$80/ 180 =

$.4444 per minute

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

for future students the answer is b

hope i

-lavira: )