Quantitative Aptitude - MCQ Practice Questions

A boat travels upstream at 8 km/h and downstream at 12 km/h. What is the average speed of the boat for the entire journey covering equal distances both ways?

A train covers $\frac{1}{4}$ of its journey at 50 km/h, $\frac{1}{2}$ at 60 km/h, and remaining at 75 km/h. What is the approximate average speed of the train?

Three workers A, B, C can complete a job in 12, 15, and 20 days respectively. If they work together for 2 days and then A leaves, what is the average work rate per day for the remaining workers?

The average selling price of 8 items is ₹250. If 2 items were sold at ₹180 each, what is the average price of the remaining 6 items?

A merchant mixes two types of rice costing ₹40/kg and ₹60/kg in ratio 3:2. What is the average cost per kg of the mixture?