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
Quantity-I: Average number of mobile phones sold by a company from January to May is 350, while average number of mobile phones sold by the same compan...
Quantity I: A rectangular prism has a length of 10 cm, a width of 8 cm, and a height of 6 cm. What is the volume of the prism in cubic centimeters?
...The combined average workforce of sites 'P' and 'Q' is 70 workers. The total number of female workers at both sites is 60, with their distribution betwe...
The following questions each present two quantities, Quantity I and Quantity II. Compare the values of the two quantities and determine their relationsh...
Quantity I: A student multiplied a number by 3/5 instead of 5/3. What is the % error in the calculation?
Quantity II: The population of a town is...
Quantity I: What will be the difference between compound interest and simple interest for 4 years on a principal of Rs.20480 at the rate of 25% per ann...
The speed of train A is 180 km/hr and it can cross a pole in 4 seconds. Travelling in same direction Train A can cross a man sitting inside train B in 1...
Quantity I: The price of rice is decreased by 30%, by how much % the consumption is increase so that the expenditure will decreased by 10%?
Qu...
Quantity-I: 'E' can do 40% of work in 32 hours. Find the value of 'Y' if the time taken by him to complete the whole work is 'Y' hours.
Quantit...
Quantity I. A sum of money becomes tripple in 4 years at compound interest, compounded annually. In how many years it will become 9 times?
Quanti...
Relevant for Exams:
