Practice & Assessment
Test your understanding of Time and Work + Time, Speed and Distance
Multiple Choice Questions
10A and B together complete work in 8 days. A alone takes 12 days. B alone takes:
A pipe fills a tank in 6 hours. Another drains it in 12 hours. With both open, the tank fills in:
A car travels 60 km at 30 km/h and returns 60 km at 60 km/h. Average speed for the full journey:
A 300m train crosses a 600m bridge at 90 km/h. Time taken:
A is 3 times as efficient as B. Together they finish in 7.5 days. A alone takes:
Boat travels 20 km downstream in 2 hours and 12 km upstream in 3 hours. Stream speed is:
Two trains, 150m and 250m long, travel at 60 and 40 km/h in opposite directions. Time to cross each other:
Average of 5 numbers is 20. A 6th number is added and the average becomes 22. The 6th number is:
In what ratio must Rs. 70 tea and Rs. 90 tea be mixed to get a Rs. 82 per kg mixture?
A task takes 20 days for 12 workers. Workers needed to complete it in 15 days:
Mini Project
Speed, Work and Efficiency Placement Simulation
Complete a 20-question mixed test combining time-work and time-speed-distance problems in 25 minutes. Use the LCM method for all work problems and draw a quick diagram for all train and boat problems. After completing, calculate your per-question average time, identify the 3 questions that took longest, and determine how you could have applied a shortcut from this module to solve each one faster.