Question

9.
For each of the following, express the first quantity
as a percentage of the second quantity.
(a) 25 seconds, 3.5 minutes
(b) 45 minutes, 1 hour
(c) 1 year, 4 months
(d) 15 mm, 1 m
​

Answer 1

Answer:

(a)60 sec-1 min

1 sec-1/60 min

25 sec-25/60 min

25 sec = 0.416666667 min

(b) 60 min-1hr

1 min - 1/60 hr

45 min-45/60

45 min-0.75 hr

(c) 1 year-12 months

(d) 1000mm-1m

1mm- 1/1000m

15mm- 15/1000m

15mm- 0.015m

I hope my answer helps you☺☺

Answer 2

It is your answer here

We will follow the following steps for expressing one quantity as the percentage (percent) of another quantity.

Step I: Quantity to be compared is taken as a numerator.

Step II: Quantity with which it is to be compared is taken as a denominator.

Step III: Quantities are expressed in the fraction form then the fraction is multiplied by 100 %.

Note: The two quantities must be of the same kind and must have the same units.

Suppose, we have to express x as the percentage of y; then the formula is:

Percentage = x/y × 100

Note: Both x and y must have the same units.

We will apply the concept of solving some real-life problems by using the formula for finding how much percentage one quantity is of another.

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