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resilient
- Legendary Member
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- Joined: Sun May 06, 2007 1:25 am
- Location: Southern California, USA
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I am trying to understand the logic and best approach to this question. Can someone please help. Stuart?
When both floodgates A and B are open, a reservoir drains in 3 1/3 days. If floodgate A alone drains in 10 days, how many days does it take floodgate B alone to drain the reservoir?
a.4
b.5
c.6 2/3
d. 10
e. 12
qa is b
The solution explains that A will drain 1/3 of reserviour by multiplying 3 1/3 days and 1/10. I dont see the reasoning of this. How can multiplying those two give that A does 1/3 of the job.
When both floodgates A and B are open, a reservoir drains in 3 1/3 days. If floodgate A alone drains in 10 days, how many days does it take floodgate B alone to drain the reservoir?
a.4
b.5
c.6 2/3
d. 10
e. 12
qa is b
The solution explains that A will drain 1/3 of reserviour by multiplying 3 1/3 days and 1/10. I dont see the reasoning of this. How can multiplying those two give that A does 1/3 of the job.
Appetite for 700 and I scraped my plate!
