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2 years ago

On Monday it was 70 degrees. On Tuesday it dropped to 45 degrees. What was the percent of change?

Mathematics

2 answers:

adelina 88 [10]2 years ago

8 0

Answer:

35.71 percent

Step-by-step explanation:

Percentage change= $\frac{Old value-New value}{Old value}$ x100

= $\frac{70-45}{70}$ x100

= $\frac{25}{70}$ x100 = 35.71 percent (rounded to 2 decimal places)

Tomtit [17]2 years ago

6 0

Answer:

The answer is 64.29% hope it helps

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If you add Natalie's age and Fred's age, the result is 36. If you add Fred's age to 4 times Natalie's age, the result is 72.

kozerog [31]

The known facts

the sum of Natalie's age and Fred's age is 36
the sum of Fred's age times four and Natalie's age is 72

Now, let's set up the equations where N is Natalie's age and F is Fred's age.

N + F = 36 ---- equation 1

N + 4F = 72 ---- equation 2

equation 2 minus equation 1 ---> 3F = 36 ---> F = 12, thus N = 24

Thus Fred is 12 years old, and Natalie is 24 years old.

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