Question
In an office, the ratio of the number of males to number
of females is 11:7. If 2 males joined the class and 6 females left the class, then the ratio of number of males to that of females in an office would become 5:3. Find the actual number of females in the class.Solution
Let initially the number of males and females in an office be 11x and 7x respectively. According to the question, => (11x + 2) : (7x – 6) = 5:3 => 33x + 6 = 35x – 30 => x = 18 Therefore, number of females in an office = 7 x 18 = 126
More Ratio and proportion Questions
√1764 + 35 × 8 + 39 = ?2
18% of 200 - 16% of 150 = ?
25% of 30% of 3/5 of 14500 =?
2(1/3) + 2(5/6) – 1(1/2) = ? – 6(1/6)
7/3 of 4/5 of 15/56 of ? = 83
What will come in place of the question mark (?) in the following expression?
40% of 150 – ?% of 80 = 25% of 400
555.05 + 55.50 + 5.55 + 5 +0.55 = ?
64.5% of 800 + 36.4% of 1500 = (?)² + 38
What will come in the place of question mark (?) in the given expression?
25% of 1280 + (41 × 4) = ?2
Simplify the following expression:
((32)4 - 1)/33×31× (210+1)
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