Question

It costs $10 to make a classroom desk. It is then sold for $190. By what percentage did the value of the desk increase by?

A. 180%

B. 1700%

C. 95%

D. 1850%

Answer 1

Step-by-step explanation:

that means that

100% = 10

1% = 100%/100 = 10/100 = $0.10

it increased by 190-10 = $180

$180 is how many % ?

as many % as times 1% fits into 180 :

180/0.1 = 1800%

the correct answer is that it increased by 1800%, but you don't have that in your answer options.

maybe you skipped it, or you made a typo. but 1800% is correct.

proof :

remember, 1% = 1/100 of 100%

190 = (100/100)×100% + (1800/100)×100% =

= 1×10 + 18×10 = 10 + 180 = 190

correct. 1800% is correct.

Answer 2

To find the percentage increase in the value of the desk, calculate the difference between the selling price and the cost price, and express it as a percentage of the cost price. The value of the desk increased by 1800%, which is 180% of its original value.

Step-by-step explanation:

To find the percentage increase in the value of the desk, we need to calculate the difference between the selling price and the cost price, and then express it as a percentage of the cost price.

Difference = Selling price - Cost price
Difference = $190 - $10
Difference = $180

Percentage increase = (Difference / Cost price) x 100
Percentage increase = ($180 / $10) x 100
Percentage increase = 1800%

Therefore, the value of the desk increased by 1800%, which is (A) 180% of its original value.