Civil Service Exam Reviewer · Word Problems · medium
A car travels 110 km from Manila to a province at 50 km/h and returns at 75 km/h. What is the average speed for the round trip?
- 62.5 km/h
- 125 km/h
- 60 km/h
- 62 km/h
Answer
C. 60 km/h
Solution
Time = 110/50 + 110/75 = 3.667 h for 220 km. Average = 220 ÷ 3.667 = 60 km/h (not the simple average).
More Word Problems questions
- The sum of three consecutive even integers is 342. What is the smallest?
- A piggy bank has 23 coins consisting of ₱5 and ₱10 coins, worth ₱205 in all. How many ₱10 coins are there?
- Two buses 750 km apart travel toward each other at 90 km/h and 60 km/h. After how many hours will they meet?
- Rina can paint a room in 10 hours, while Bea can paint it in 40 hours. How long will it take them working together?
- Twice a number decreased by 19 is 7. What is the number?
- A bus travels at an average speed of 90 km/h for 3 hours. How far does it travel?
- Ben is 13 years older than Ramon. If Ramon is 22 years old now, how old will Ben be in 8 years?
- Paolo bought 6 cans of sardines at ₱33 each and 5 packs of noodles at ₱50 each from a sari-sari store. If Paolo paid with ₱600, how much…
- The sum of three consecutive integers is 288. What is the largest of the three?
- A canteen sells meals at ₱47 each. How many meals can be bought with ₱200, and how much is left?