Question

Im desperate for help in these grade 7 questions please help

Answer 1

What percentage of $680 is 490? ANSWER: 138.78%

The price is reduced from $680 to $490. What is the percentage decrease? ANSWER: 72.06%

Explanation:

ANSWER: 138.78%

How did I get 138.78%?

690 & 490 can be written as a fraction

which would be 680/490, how do I find the percentage?

• you have to find an equivalent fraction with denominator of 100 for the problem we"ll get
  `(680)/(490) x(100)/(100)` ( 680/490 x 100/100 )

• Next divide the top and the bottom, 680 into 100 ( 680 x 100 ) and the bottom which would be 490 into 100 ( 490 x100 )

• ,
  `(680x100)/(490)` x
  `(1)/(100)` if you cannot see: ( 680 x 100/490 x 1/100
• Equation you have is:
  `(680 x 100)/(490) x (1)/(100) = (138.78)/(100)`
• The final answer will be 138.78%, so the percentage is 138.78%. If your trying to figure it out on the calculator just type 680 divided by 490x100 which will also give the answer.

72.06%

How did I get 72.06%?

490 and 680 can be written as a fraction

which would be 490/680, how do I find the percentage?

• you have to find an equivalent fraction with denominator of 100 for the problem we"ll get
  `(490)/(680) x(100)/(100)` ( 490/680 x 100/100 )

• Next divide the top and the bottom, 490 into 100 ( 490 x 100 ) and the bottom which would be 680 into 100 ( 680x100 )

• now start solving it,
  `(490x100)/(680)` x
  `(1)/(100)` if you cannot see: ( 490 x 100/680
• Equation you have is:
  `(490 x 100)/(680) x (1)/(100) = (72.06)/(100)`
• The final answer will be 72.06%, so the percentage decreased by 72.06%. If your trying to figure it out on the calculator just type 490 divided by 680x100 which will also give the answer.