AC Lim's answer to Potato's Secondary 3 E Maths Singapore question.
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Hope this helps
Date Posted:
4 months ago
I skipped few steps, let me know if you have doubts.
May I ask why do you take 3.25/ x ??
What am I trying to find for A?
What am I trying to find for A?
3 min 15 second = 3.25 min
Tap A take x min to fill the tank
x min ↣ 1 tank
3.25 min ↣ 3.25/x tank
Tap A take x min to fill the tank
x min ↣ 1 tank
3.25 min ↣ 3.25/x tank
Does that mean 3.25/x is the time taken for tap A to fill the tank with some water
3.25/x+5 is the time taken for tap b to fill the same tank with some water
3.25/x+5 is the time taken for tap b to fill the same tank with some water
Yes. You're right.
Mean for 3.25 min, for example
Tap A filled 3/5 of tank and
Tap B filled 2/5 of tank
So, total Tap A And Tap B filled full tank in 3.25min
Mean for 3.25 min, for example
Tap A filled 3/5 of tank and
Tap B filled 2/5 of tank
So, total Tap A And Tap B filled full tank in 3.25min
In short, calculate tank height in 3.25min
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