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
276 ÷ 11.5 + 12 = ? x 3
(165 × 12) ÷ 45 + 110 = ? × 2
45 % of 180 + √144 * 8 = ?2  + 70 % of 80
(√1296 – 12) × 5 = ? + 40
`2(1/3)` + `4(1/4)` + `4(2/3)` + `8(7/6)` + ? = `4(3/5)xx4(1/2)`
...Simplify the following expressions and choose the correct option.
(45% of 640) ÷ 8 + (3/4 of 96) = ?
95% of 830 - ? % of 2770 = 650
√(24²+285-8²-172) = ?²
What will come in the place of question mark (?) in the given expression?
(5/8) × 1600 + (2400 ÷ 25) = ?Â
?2 = √20.25 × 10 + √16 + 32
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