Answer:
3800
Step-by-step explanation:
Variables:
O - Original cost
N - New cost
c - change factor
Step 1:
Recognize that if something decreases by 19%, it is worth 19% <em>less</em>
This means that the new price, fractionally, is 100% - 19% = 81%
So we can use c as 0.81 (81/100)
Step 2:
Write an equation to represent what is happening
N = O * c
Step 3:
Sub in what we know
3078 = O * 0.81
Step 4:
Rearange and solve
O = 3078 / 0.81 = 3800
15(x+2y) .…....….…….............
Answer: There are 9 pieces that can be cut from 75 inches roll.
Step-by-step explanation:
Since we have given that
Length of roll = 75 inch
Length of fabric is to be cut is given by
We need to find the number of pieces :
Hence, there are 9 pieces that can be cut from 75 inches roll.
Answer:4 answer
Step-by-step explanation:
The weight of each fish would be 10 times the weight of the previous fish.
Assume that the first time, the weight was 500 lb. Since there were 100 fish caught, each one would weigh 500/100 = 5 lb.
This time, however, only 10 fish were caught. The weight is still 500 lb. 500/10 = 50 lb per fish.
50 = 5(10), so the weight is 10 times more.
