James went shopping for a new watch. The original price was $150. It was marked down to $110. What is the percent of decrease?

26.7% is the percent of decrease

Step-by-step explanation:

$150=100% price (starting og price)

110 =? or x (discounted price)

We need to find what is the decrease from 150 to 110 in percentage

Use ratios to solve:

$150:100%

$110:x (unknown)

Cross multiply to find x

150 times x= 150x, and 100x110 = 11000

= 150x=11000

Lets get x all by itself to fully solve. We have to divide to get x by itself:

= 150x/150=11000/150 (divide 150 both sides always)

= 73.3,

Now we subtract 73.3 from 100 to get the decrease percentage

100-73.3=26.7 which is the percent of decrease

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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step-by-step explanation:

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