Question : If 30% of (B – A) = 18% of (B + A), then the ratio A : B is equal to:
Option 1: 4 : 1
Option 2: 1 : 4
Option 3: 5 : 4
Option 4: 5 : 9
Correct Answer: 1 : 4
Solution : Given: 30% × (B – A) = 18% × (B + A) ⇒ $\frac{30}{100}$ × (B – A) = $\frac{18}{100}$ × (B + A) ⇒ 5 × (B – A) = 3 × (B + A) ⇒ 5B – 5A = 3B + 3A ⇒ 8A = 2B ⇒ A : B = 2 : 8 = 1 : 4 Hence, the correct answer is 1 : 4.
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Question : If $p=\frac{5}{18}$, then $27p^{3}–\frac{1}{216}–\frac{9}{2}p^{2}+\frac{1}{4}p$ is equal to:
Option 1: $\frac{4}{27}$
Option 2: $\frac{5}{27}$
Option 3: $\frac{8}{27}$
Option 4: $\frac{10}{27}$
Question : Three cars travelled a distance in the ratio 1 : 2 : 3. If the ratio of the time of travel is 3 : 2 : 1, then the ratio of their speed is:
Option 1: 3 : 9 : 1
Option 2: 1 : 3 : 9
Option 3: 1 : 2 : 4
Option 4: 4 : 3 : 2
Question : The ratio of two numbers is 3 : 5. If eight is added to the first, and seven to the second, then the ratio becomes 2 : 3. What will the ratio become if six is added to each?
Option 1: 9 : 14
Option 2: 5 : 7
Option 3: 5 : 9
Option 4: 7 : 9
Question : If A : B = 3 : 4 and B : C = 6 : 5, then A : ( A + C) is equal to:
Option 1: 9 : 10
Option 2: 10 : 9
Option 3: 9 : 19
Option 4: 19 : 9
Question : Directions: In a certain code language, GOURD is written as 21–4–5–10–24. How will BRINJAL be written in the same code language?
Option 1: 2–10–3–14–18–1–12
Option 2: 26–10–3–14–18–1–16
Option 3: 26–10–5–14–18–2–16
Option 4: 25–9–3–14–18–1–15
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