Question : What is to be added to 15% of 160 so that the sum may be equal to 25% of 240?
Option 1: 24
Option 2: 84
Option 3: 60
Option 4: 36
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Correct Answer: 36
Solution : Let the unknown value be $x$ According to the question 15% of 160 + $x$ = 25% of 240 ⇒ $\frac{15}{100}$ × 160 + $x$ = $\frac{25}{100}$ × 240 ⇒ 24 + $x$ = 60 ⇒ $x$ = 36 Hence, the correct answer is 36.
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Question : When 20 percent of a number is added to 160, then the result is that number only. What is the value of the number?
Option 1: 160
Option 2: 150
Option 3: 200
Option 4: 240
Question : Three numbers are in the ratio of 1 : 2 : 3. The product of the three numbers is 1296. What is the sum of the three numbers?
Option 1: 36
Option 2: 30
Option 3: 72
Option 4: 24
Question : Find the fourth proportion to 55, 60, and 33.
Option 2: 24
Option 3: 28
Option 4: 30
Question : What will be the ratio of the Least Common Multiple and Highest Common Factor of 12, 24, and 36?
Option 1: 3 : 1
Option 2: 4 : 1
Option 3: 6 : 1
Option 4: 2 : 1
Question : If p : q = 4 : 7 and q : r = 3 : 5, then what is the value of 2p : 3q : 5r ?
Option 1: 36 : 60 : 181
Option 2: 25 : 72 : 180
Option 3: 24 : 63 : 175
Option 4: 28 : 79 : 188
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