Question
Two cars start from a place with a speed of 45 km/hr at
an interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the place if he meets the cars at an interval of 9 minutes?Solution
Distance covered in 10 minutes at 45 km/hr = 45 x (10/60) Distance covered in 9 minutes at (45 + x) km/hr = (9/60) x (45 + x) Now, Distance covered in 10 minutes at 45 km/hr = Distance covered in 9 minutes at (45 + x) km/hr ⇒ 45 x (10/60) = (9/60) x (45 + x) ⇒ 45 x 10 = 405 + 9x ⇒ 450 = 405 + 9x ⇒ 9x = 450 - 405 = 45 ⇒ x = 5 km/hr
If another new department ‘R&D’ was formed and 40% of the employees from IT and Marketing departments each were moved to the new department, then fi...
- Find the difference between number of silk flowers sold by shop A and B.
The number of Butter cookies baked on Wednesday is how much % of the total number of Chocolate cookies baked on all days?
Difference between discount offered by Company B and cost of Company A.
Find the ratio of initial quantity of vessel A and the left quantity of water in vessel C after removing 40%.
Find the average number of surgical masks sold on Monday and Tuesday.
Find the average number of Turkey burger sold by Farzi, Veggie burger sold by Kalsang and Bean burger sold by Piccolo.
11, 13, 30, 96, 392, ?
Difference between the number of females of tribe Raba and Dimasa together is approximately what percent of the total population of tribe Dimasa?
40% mask from company A purchased by men. 30% of mask from company B purchased by men. Find the difference between the mask purchased by women from com...
Relevant for Exams:
