Question
Two trains C and D started from point A and B
respectively. Speed of train D is 21 km/hr more than that of train C. Total distance between point A and B is 495 km. If both the trains meet in 3 hours 40 minutes, then find the speed of train D (in km/hr).Solution
Let the speed of train C be ‘x’ km/hr. Then, speed of train D = (x + 21) km/hr Time = 3 hours 40 minutes = 3(40/60) = 3(2/3) = 11/3 hrs According to the question, => Speed = Distance/ Time => (x + x + 21) = 495/(11/3) => 2x + 21 = 45 × 3 => 2x = 135 - 21 => x = 57 Speed of train C = x = 57 km/hr Speed of train D = (x + 21) = 78 km/hr
The revenue recognition principle dictates that all types of incomes should be recorded or recognized when
According to the India State Forest Report 2021, which state has shown the highest increase in forest cover?
Which of the following is produced when hydrochloric acid reacts with water?
The property/properties that must be possessed by a material to be chosen for making heating element of heating devices are:
(i) high melting poi...
What is the result when the smallest fraction is subtracted from the largest fraction among the given values: 3/4, 9/2, 5/6, 2/3, and 4/5?
Which of the following is/are incorrect in regards to Veer Bal Diwas?
1.It was celebrated in 2021 for the 1st time.
2.It will be celebrate...
When did the LPG reform Budget was introduced in 1991?
Which creates an opportunity for the producers to reach beyond the domestic markets?
1st ASEAN-India Start-up Festival 2022 was held at ______________ .
Study the diagram and answer the question that follows.
A = Academicians, E = Teachers, D = Women, B = Men, and C = Doctors. The numbers inside t...
Relevant for Exams:
