$37.25 must be payed for the total time of 115 minutes.
<u>Step-by-step explanation:</u>
- The cost for 1st 45 minutes = $12.75
- The cost per minute for additional 2 hours = $0.35
- The cost per minute for additional time after 2 hours = $0.25
x be the total time spent in minutes,
It is given that the total time spent, x = 115 minutes.
<u>To find the cost to pay for 115 minutes :</u>
The first 45 minutes out of 115 minutes should be payed $12.75
Therefore, the remaining minutes is 115 - 45 = 70 minutes.
The additional 2 hours (120 minutes) should be payed $0.35 per minutes.
But, in this case the additional time is only 70 minutes.
⇒ 70 × 0.35
⇒ $24.5
The total amount to be payed for 115 minutes = $12.75 + $24.5
⇒ $37.25
Answer:
$20
Step-by-step explanation:
The large ones cost $4 more so what you would do is to subtract that $4 from the $24.
24-4=20
Answer:
20 liters of the 40% solution
60-20=40 liters of the 70% solution
Step-by-step explanation:
40%x+70%(60-x)=60%(60)
0.4x+0.7(60-x)=0.6(60)
0.4x+42-0.7x=36
-0.3x+42=36
-0.3x=-42+36
-0.3x=-6
0.3x=6
3x=60
x=60/3
x=20 liters of the 40% solution
60-20=40 liters of the 70% solution
check: 0.4*20=8
0.7*40=28
8+28=36 and 0.6*60=36 also
Answer:
5/4, 2, 9/4, 3, 3/1 (the last two are the same so it could go in either order)
Step-by-step explanation:
1 1/4, 2, 2 1/4, 3, 3
