Question
The number of boys and girls in a class is 480 and 320,
respectively. When (x + 40) boys and x girls join, the ratio becomes 3:2. Find the value of ‘x’.Solution
According to the question,
(480 + x + 40) / (320 + x) = 3 / 2
Or, 2(520 + x) = 3(320 + x)
Or, 1040 + 2x = 960 + 3x
Or, x = 80
The path of a ray of light incident on an interface separating two media is shown in the figure below. The refractive index of medium A with respect to ...
When we are travelling in a bus, we tend to move forward when the bus is stopped suddenly. This is because of ________.
Match List-I (Distinguished Women) with List-II (Known As) and select the correct answer using the codes given below the Lists:
In the adjoining figure, line l is parallel to m. What is the value of 2x + y ?
On which date, a Naval Central Strike committee was elected in order to deal with the rising strikes by Indian sailors of the RIN?
In 1870, who among the following formed the Puna sarvjanik sabha ?
If 2 is added to each odd digit and 1 is subtracted from each even digit in the number 34135278, what will be the sum of the digits that are third from ...
Consider the following statements:
1.   Sangama dynasty was the first dynasty to rule over Vijayanagar kingdom
2.   Sriranga III w...
A train can cross a pole in 48 seconds. While if the train increased its speed by 50% then time taken by it to cross 225 metres long platform is 42 seco...
How many days’ notice must an employer give if 62 workers are employed and he intends to close down?
