N= 12
Subtract 70.85 and 7.25 which equals 63.6. Then take 63.6 divided by 5.3 and it equals 12! Hope this helps.
Answer:
240g in the ratio of 5:3:4
So we need to divide it evenly.
First add up all the ratios.
5+3+4= 12
Now divide 240 by the sum.
240/ 12 = 20
Now you multiply that into each ratio.
5*20 = 100
3*20 = 60
4*20 = 80
Now put it back in the ratio with the new numbers int he exact order as before.
Final Answer: 100 : 60 : 80
Check:
You can check by adding them all up to see if they all go into 240 OR you can divide them each by the number originaly given and you should get 20.
100 + 60 + 80 = 240
100 / 5 = 20
60/3 = 20
80/4 = 20
Answer:
A ) subtract the second equation from the first equation
Step-by-step explanation:
2x + 3y = 7
2x - 4y = -5
subtracting the second equation from the first equation we get,
7y = 12
y=12/7
This is the correct option
So you know the merchant made a 15% profit on the pen, so she bought it for a cheaper price. To find the cost of the pen before you have to take the price now, $6.90 and times it by 85%. You do 85% because you subtract the 15% she saved from 100% and you get 85%. So 6.90x.85= 5.865 which rounds to $5.87
