TalentJR apps
Pipes and cisterns are time-and-work questions with water. Call the tank the LCM of the hours. Each filling pipe adds units every hour, each leak or outlet takes units away, and the net rate tells you the time.
✓ You passed this lesson’s test.
Tank = LCM units — “call the tank the LCM of the hours; fillers add units each hour, leaks take them away”
Use it for: Water tanks, taps and leaks, and pipes-and-cisterns questions in aptitude tests.
Check: In 8 hours A fills 8/12 = 2/3 and B fills 8/24 = 1/3: one full tank ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🚰 Tank Filler badge when you pass — and a certificate when you finish all 10 lessons of Part 3 · Aptitude challenge. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.