Question
A train started from station P and preceded towards
station Q at a speed of 90 km/h. 42 minutes later, another train started from station Q and preceded towards station P at 100 km/h. If the distance between the two stations is 443 km, at what distance from station P will the trains meet?Solution
Let the train will meet ‘t’ hours after the train from station Q started Distance travelled by train started from station P = 90 x 42/60 km Distance travelled by train started from station Q = (90 + 100) x t km Total distance between station P and Q = 443 km Now, 90 x (42/60) + (90 + 100) x t = 443 ⇒ 90 + 190t = 443 ⇒ 190t = 443 – 63 = 380 ⇒ t = 380/190 = 2 hours Distance travelled by train starting from station P at all meeting point = 63 + 90 x 2 = 243 km
Find the number of triangles in the given figure:
How many Quarilaterals are there in the following figure?
How many classes are there in the given picture?
In the adjoining figure, if the centres of all the circles are joined by horizontal and vertical lines, then find the number of squares that can be form...
How many rectangles are there in the given figure?
Find the number of triangles in the given figure.
- How many squares are there in the given figure?
How many triangles are there in the given figure?
Relevant for Exams:
