Advertisements
Advertisements
प्रश्न
A train takes 2 hours to travel from Ajmer to Jaipur, which are 130 km apart. How much time will it take to travel from Delhi to Bhopal which are 780 km apart if the train is travelling at the uniform speed?
उत्तर
Time taken by train to travel from Ajmer to Jaipur = 2 h
Distance between Ajmer and Jaipur = 130 km
Distance between Delhi and Bhopal = 780 km
The train is travelling at the uniform speed
Therefore, distance : time :: distance : time
⇒ 130 : 2 :: 780 : x (let)
⇒ `130/2 = 780/x`
⇒ `130 xx x = 2 xx 780` .....[By corss-multiplication]
⇒ `x = (2 xx 780)/130` = 12
Hence, the train will take 12 h from Delhi to Bhopal.
APPEARS IN
संबंधित प्रश्न
Calculate the ratio in which the line joining A(−4, 2) and B(3, 6) is divided by point P(x, 3). Also, find
- x
- length of AP.
If the ratio between 8 and 11 is the same as the ratio of 2x – y to x + 2y, find the value of `(7x)/(9y)`.
If `(y- x)/x = 3/8` , find the value of `y /x`
Find the reciprocal ratio of e following :
`17/45 : 51/27`
Two poles of different heights are standing vertically on a horizontal field. At a particular time, the ratio between the lengths of their shadows is 2 :3. If the height of the smaller pole is 7.5 m, find the height of the other pole.
Find the third proportional of `1/7 "and" 3/14`
If y (3x – y) : x (4x + y) = 5 : 12. Find (x² + y²) : (x + y)².
To find the ratio of two quantities, they must be expressed in _____ units.
Find two numbers whose sum is 100 and whose ratio is 9:16.
See the figure and find the ratio of number of triangles to the number of circles inside the rectangle.
