Question
Sum of the three numbers is 150. Ratio of the first
number to second number is 3:5 and the ratio of second number to third number is 5:7. Find the second number.Solution
ATQ, Let the second number be '5x'. So, first number = (3/5) x 5x = '3x' And, third number = (7/5) x 5x = '7x' According to the question, 3x + 5x + 7x = 150 Or, 15x = 150 So, 'x' = 150/15 = 10 Therefore, the second number = '5x' = 5 x 10 = 50
More No. System Questions
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
24.45% of 14.99% of 14999.78 + 159.80 = ?% of 1999.78
15.78% of (287 + 302) + 12³ = ?% of 170 + 8 × 14 + 3²
? = 65.78² ÷ (5.01⁵ + 7.02 × 33.33) + 33.33% of (290.88 × 23.09)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
1784.04 - 483.98 + 464.98 ÷ 15.06 = ?3
? = 54.89 × 270.08 ÷ 135.17 + 464.35 ÷ 29.03
233.98 + 73 × √35.95 - ? = 275.94 ÷ 3.99
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