Question
A race track is in the shape of a rectangle with length
of 80 metres and area of 2400 m2. A car takes 20 seconds to make one lap around the perimeter of this track. If the car and a person whose speed is 5 m/s, started moving at the same time along the perimeter of the track but in opposite directions, then find the distance between the car and the person, 3 seconds before they cross each other.Solution
Area of the track = length of track x breadth of track = 80 x breadth of track = 2400 So, breadth of track = 2400 ÷ 80 = 30 So, perimeter of the track = (80 + 30) x 2 = 220 metres So, speed of the car = (220/20) = 11 m/s Relative speed of the car with respect to the person = 11 + 5 = 16 m/s So, distance between the car and the person, 3 seconds before they cross each other = 16 x 3 = 48 metres
Select the most appropriate meaning of the Given idiom.
Word of mouth
Select the most appropriate meaning of the given Idiom.
BECK AND CALL
In each question below, a sentence is given with an idiom/phrase printed in bold type. That part may contain a grammatical error. Each sentence is follo...
Select the most appropriate meaning of the given idiom.
To bear the palm
Select the most appropriate meaning of the given idiom.
The whole nine yards
Choose the correct replacement for the bold phrase.
When the police arrived, the burglars ran over the back wall to escape.
...When it comes to solving this problem, we need to think outside the box to find a creative solution.
- Which of the following idioms means ‘to initiate action, especially when others are reluctant or waiting’?
Fill in the blank with an appropriate idiom.
Despite his initial hesitation, John decided to __________ and invest all his savings in the start...
- Think on your ______
