Ratio and Proportion Question No. 101 to 110 of RS Aggarwal Objective Arithmetic Book | With Concept

Описание: Hello friends today in this video I have shown you how to solve Ratio and Proportion math from RS Aggarwal Objective Arithmetic book in Bengali.

101. In an alloy, the ratio of copper and zinc is 5:2. If 1.250 kg of zinc is mixed in 17 kg 500g of alloy, then the ratio of copper and zinc in the alloy will be:

(a) 1:2
(b) 2:1
(c) 2:3
(d) 3:2

102. 6 men, 7 women, and 5 children complete a job for ₹4400. If their individual wages be in the ratio 4:3:2, the total money earned by 5 children is:

(a) 880
(b) 800
(c) 900
(d) 960

103. If y varies directly as (x+3) and y=8 when x=1. What is the value of y when x=2?

(a) 6
(b) 10
(c) 12
(d) 16

104. If x² varies directly as y³ and when x=6, y=3, then which of the following relations is true?
(a) 3x²=4y³
(b) 3x²=2y³
(c) y²=2x³
(d) y³=2x²

105. It is given that y ∝ 1/(x+3). For x=2, we have y=1/6. If x=2, then the value of y is:

(a) 6
(b) 1/6
(c) 1/4
(d) 1/8

106. If 0.75:x :: 5:8, then x = ?

(a) 1.12
(b) 1.2
(c) 1.25
(d) 1.3

107. What must be subtracted from each one of 21, 38, 55, 106 so that the remainders are proportional?

(a) 2
(b) 4
(c) 6
(d) 8

108. Fourth proportional to 0.2, 0.12, and 0.3 is:

(a) 0.13
(b) 0.15
(c) 0.18
(d) 0.8

109. Third proportional to 0.36 and 0.48 is:

(a) 0.64
(b) 0.1728
(c) 24√0.0003
(d) None of these

110. Mean proportional to 0.32 and 0.02 is:

(a) 0.8
(b) 0.08
(c) 0.008
(d) 0.4