Questions in the practice test on concept of ratio and proportion will help us to get the clear concept on ratio and proportion.

**1.** What is the unit of a ratio?

**2.** Can we find the ratio of 42 l to 15 m?

**3.** Write the simplest form of the ratio 27 : 57?

**4.** Write the simplest form of the ratio 2 kg to 220 g?

**5.** Write the simplest form of the ratio 1 hour to 25 seconds?

**6.** Write the simplest form of the ratio 15 dollars to 15 cents?

**7.** Are 1, 2, 3 and 4 in proportion?

**8.** Are 2, 4, 6 and 12 in proportion?

**9.** Are 1, 2, 2 and 4 in proportion?

**10.** Are 6, 2, 4 and 3 in proportion?

**11.** Are 2 : 3 and 4 : 6 equal?

**12.** Find the value of k, if 2, 3, k, 6 are in proportion.

**13.** Find the value of p, if 4, p, p, 36 are in proportion.

**14.** If X, Y, Z divide $12000 in the ratio 2 : 3 : 5, then find the
share of Y.

**15.** In a proportion, the first, third and fourth terms are 3, 21, 35.
Find the second term.

**16.** Are 16, 84 and 441 in continued proportion?

**17.** The ratio of the length of its breadth of a park is 3 : 2. If its
breadth is 24 m, find its length.

**18.** A factory manufactures 300 items, out of which 36 are defective.
Find the ratio of the number of good items to the defective ones.

Answers for the practice test on concept of ratio and proportion are given below to check the exact answers of the above problems.

**Answers:**

**1.** Ratio is unitless

**2.** No

**3.** 9 : 19

**4.** 100 : 11

**5.** 144 : 1

**6.** 100 : 1

**7.** No

**8.** Yes

**9.** Yes

**10.** No

**11.** Yes

**12.** 4

**13.** 12

**14.** $360

**15.** 5

**16.** Yes

**17.** 56 m

**18.** 22 : 3

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