Math-how this was solved? i need clear answers plz (1-5)?

Question

***The normal selling price of a case of soap is $10.00. During a special sale, the price was reduced by 10%. (Note: 10% means 10 percent.) This sale price was 20% greater than the cost to produce a case of soap. How much did it cost to produce a case of soap?

A.$9.00
B.$8.00
C.$7.50
D.$7.00
E.$6.50

((answer: C))) ****

Answer 1

start price $10
reduced price by 10%=.9*10=9.00
20% greater than cost implies
c*1.2=9
=>c=9/1.2=7.5 or $7.50

Answer 2

Ok, well the original price of the bar of soap was $10.00, which was reduce by 10%. So divide 10 by 100, to get 1% and then times it by ten to get 10%. Then minus it to get the sale price. $9.00

This however, is 20% more than the cost price. The cost price is 100%, so when you add them all together, its 120%.
So you do the same time, divide 9 by 120 to get 1%. Then times by 100% to get the cost price.

What you get is 7.50 which is answer C.

Answer 3

Discounted price = 90% of $10
= $9

Discounted price = 120% of production cost

Production cost = $9/1.2 (As 120% = 120/100 = 1.2)

= $7.50 ← Option C

Answer 4

for each 5 gallons of X you choose 2 of Y and one in all Z, with the provision you indexed we are able to apply all 25 gallons of X, to make certain how plenty Y we choose take the quantity of X we are using divide by the propotion volume of X and multiply by the propotion volume of Y. consequently we've 25/5 * 2 =10 Gallons of Y, repeat that step to locate we can be using 5 gallons of Z 25 Gal of X + 10 Gal of Y + 5 Gal of Z makes 40 gallons of answer

Answer 5

$10 - 10% = 9 (easy, huh?)
$9 = 120% of production costs
so 9 / 12 * 10 = $7.50

Therefore: C

Answer 6

Reason why I graduated high school: I DID MY OWN FREAKIN HOMEWORK!


Have a nice day.

Answer 7

I don't know because when I solve it I am getting $7.20.

Answer 8

$7.50

Answer 9

mmmmmmmmmmmmmmmmmmmmmmmmmmm..............