Question
A person travels 30 km at a speed of 15 km/h, another 20
km at 10 km/h, and the final 50 km at 25 km/h. What is the average speed for the entire journey?Solution
Time for the first part = Distance / Speed = 30 / 15 = 2 hours. Time for the second part = 20 / 10 = 2 hours. Time for the third part = 50 / 25 = 2 hours. Total distance = 30 + 20 + 50 = 100 km. Total time = 2 + 2 + 2 = 6 hours. Average speed = Total distance / Total time = 100 / 6 ≈ 16.67 km/h. Correct Option: b
How is S related to E?
Answer the questions based on the information given below.
There are seven members D, E, F, G, H, I and J in a family, which consists of only...
There are six persons, C, D, E, F, G and H in a family. H is the paternal grandmother of C. E is the sister of G. D is the father of E. C is the only so...
Study the information carefully and answer the questions accordingly.
There are nine members in a family with four females and two married coup...
Ankit and Mohit are brothers. Shikha and Shweta are sisters. Ankit’s son is Shweta’s brother. How Mohit is related to Shikha?
B has two sons and one daughter. G and J are the two married sons of B. F is the son of G. I is the daughter of C. E is married to G. C is married to J....
How is G related to E?
There are nine members in three generations and three married couples in the family. There are only four male members in the family. K is son of N who i...
Answer the questions based on the information given below.
There are seven members in a family (L, M, N, O, P, Q and R) which consists of three...
In a family, H is the father of M, P is the mother of Z, M is the brother of Z and O is married to M. Who is the father-in-law of O?
Relevant for Exams:
