Answer:
Mandy's bag is 60% heavyer than Donna's.
Step-by-step explanation:
When someone's bag is "x%" heavyer then someone else's it's the same as saying that it is "100% + x%" of that value, while if it is lighter it's the same as saying that it is "100% - x%".
Since Mandy's bag is 20% heavier than Kathleen's, then:
Mandy = 1.2*Kathleen
Since Donna's bag is 25% lighter than Kathleen's, then:
Donna = 0.75*Kathleen
Kathleen = Donna/0.75
Then
Mandy = 1.2*(Donna/0.75) = 1.6*Donna
Answer:
b and c
Step-by-step explanation:
B AND C
Answer:
D = 240 - 30t
Step-by-step explanation:
If the equation represents her distance from City A, we need to include 240 in the equation to represent the distance to the city.
Then, we need to subtract 30t from 240 in the equation because 30t represents how far she will have traveled in t hours.
So, D = 240 - 30t is the equation that will represent Layla's distance from the city.
HOPE THAT HELP
The objective is to get the variable (x) alone. To do this start be subtracting 3. What you do to one side you have to do to the other so you have to subtract three from the other side of the equal sign as well. So now you have:
20x= 17-3 subtract the 3 to get 20x=14
Now because the 20 is attached to the x In order to get the x alone you have to divide by 20:
20x/20. =14/20 divide 14 by 20
X=.7 or x=7/10