ratio proportion and partnership Model Questions & Answers, Practice Test for ssc mts paper 1 2023

Question :16

If a dividend of Rs. 57,834 is to be divided among Meena, Urmila and Vaishali in the proportion of 3:2:1, find Urmila's share.

Answer: (d)

Share of Urmila in dividend

= $(2/6×57834)$ = Rs.19278

Question :17

Pinku, Rinku and Tinku divide an amount of Rs. 4,200 amongst themselves in the ratio of 7:8:6 respectively. If an amount of Rs. 200 is added to each of their shares, what will be the new respective ratio of their shares of amount?

Answer: (d)

Ratio of the amounts received by A, B and C = 7 : 8 : 6

∴Sum of the ratios = 7 + 8 + 6 = 21

Sum received by

Pinku = $7/21$ × 4200 = Rs.1400

Rinku = $8/21$ × 4200 = Rs.1600

Tinku = $6/21$ × 4200 = Rs.1200

According to the question,

On adding Rs.200 to the share of each one, the required ratio

= 1600 : 1800 : 1400 = 8 : 9 : 7

Question :18

The third proportional between ${(a^2 - b^2)}$ and $(a + b)^2$ is

Answer: (d)

Let x be the required third proportional

∴${a^2 - b^2}/{(a + b)^2}$ = ${(a + b)^2}/x$

⇒x = ${(a + b)^4}/{a^2 - b^2}$ = ${(a + b)^3(a + b)}/{(a + b)(a - b)}$ = ${(a + b)^3}/{a - b}$

Question :19

A person distributes his pens among four friends A, B, C, D in the ratio ${1/3} : {1/4} : {1/5} : {1/6}$ . The minimum number of pens that the person should have is

Answer: (b)

Question :20

Number of students studying in colleges A and B are in the ratio of 3 : 4 respectively. If 50 more students join college. A and there is no change in the number of students in College B, the respective ratio becomes 5 : 6. What is the number of students in College B?

Answer: (d)

Let the number of students in colleges A and B be 3x and 4x respectively.

According to the question. ${3x + 50}/{4x} =5/6$

⇒20x = 18x + 300⇒2x = 300⇒x=${300}/2$ = 150

∴Number of students in college, B = 4x

4 × 150 = 600

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