Question
In an office, the ratio of the number of males to number
of females is 7:3. If 2 males joined the class and 5 females left the class, then the ratio of number of males to that of females in an office would become 5:2. Find the actual number of females in the class.Solution
Let initially the number of males and females in an office be 7x and 3x respectively. According to the question, => (7x + 2) : (3x – 5) = 5:2 => 14x + 4 = 15x – 25 => x = 29 Therefore, number of females in an office = 3 x 29 = 87
- 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.)
What approximate value should replace the question mark?
30.02% of 400.03 + ?% of 600.05 = 300.01
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.)...
A can complete a piece of work in 15 days. B is 30% more efficient than A. If they work together, how many days will it take to complete the work?
The Average of P1, P2, and P3 is 60. Given that P1 is equal to 1/3rd of this average, what is the average value of P2 and P3?
Find the approximate value of Question mark(?) for given equation.
(71.92% of 149.99) ÷ 12.04 + 107.98 = ?
√65 of 14.97 + √50 = (12.02)2 - ?
1299.999 ÷ 325.018 × 24.996 = ?
44.78% of 715.62 + 1785% of 42.98 = ?
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