Question
In a classroom, the ratio of the number of boys, girls, and
teachers is 5:4:1, respectively, and the average number of people in each category is 50. What is the average number of boys and girls in the classroom?Solution
ATQ,
Let the number of boys in the classroom = ‘5x’
Then, the number of girls in the classroom = ‘4x’
And, the number of teachers in the classroom = ‘x’
According to the question,
So, the average number of boys and girls =
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 Given a triangle with two sides measuring 12 cm and 16 cm, which of the following cannot be a possible length for the third side?
A man running at the speed of 6 kmph was over taken by the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.
(15 x 15 x 15 + 8 x 8 x 8)/(15 x 15 -15 x 8 + 8 x 8) = ?
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A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.
The...
ABCD is a cyclic quadrilateral in which AB =16.5 cm. BC = x cm. CD= 11 cm. AD 19.8 cm, and BD is bisected by AC at O. What is the value of x?
