Answer:
Carman run 22 laps
(5 1/2) / (1/4) convert 5 1/2 to an improper fraction
(11/2) /(1/4) when you divide the second number you flipped and multiply
11/2 * 4/1
22
Answer:
Number of cheaper dresses sold is 35
Number of expensive dresses sold is 15
Step-by-step explanation:
Given:
Cost of cheaper dresses = $90
Cost of expensive dresses = $140
Total cost of the dresses = $5250
To Find:
Number of cheaper dress = ?
Number of expensive dress = ?
Solution:
Let
The number of cheaper dresses be x
The number of expensive dresses be y
(Number of cheaper dresses X cost of cheap dress) + (Number of Expensive dresses X cost of expensive dress) = $5250
= $5250
It is given that the 20 more of the cheaper dresses than the expensive dresses is sold
So,
number of cheaper dress = 20 + number of expensive dress
x = 20 + y---------------------------------------(1)
![(20+y) \times90 +y \times 140 = 5250 = 5250](https://tex.z-dn.net/?f=%2820%2By%29%20%5Ctimes90%20%2By%20%5Ctimes%20140%20%3D%205250%20%3D%205250)
![(20 \times 90 +y\times 90) +y \times 140= 5250](https://tex.z-dn.net/?f=%2820%20%5Ctimes%2090%20%2By%5Ctimes%2090%29%20%2By%20%5Ctimes%20140%3D%205250%20)
![1800 + 90y+ 140y = 5250](https://tex.z-dn.net/?f=1800%20%2B%2090y%2B%20140y%20%3D%205250%20)
![1800 + 230y = 5250](https://tex.z-dn.net/?f=1800%20%2B%20230y%20%3D%205250%20)
![230y =5250 -1800](https://tex.z-dn.net/?f=%20230y%20%3D5250%20-1800)
![230y = 3450](https://tex.z-dn.net/?f=%20230y%20%3D%203450%20)
![y = \frac{3450}{230}](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7B3450%7D%7B230%7D)
y = 15
Substituting y in (1)
x = 20 +15
x= 35
Answer:
b
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
1. 50% of 60mins is 30mins
2. 10% of 60 mins is 6mins
3.75% of 60 mins is 45mins