Ritawilson97idn
Answered

IDNLearn.com offers a comprehensive platform for finding and sharing knowledge. Discover the information you need quickly and easily with our reliable and thorough Q&A platform.

water is being pumped to empty a swimming pool.

At 6 a.m , the water level is 150 cm . Every 2 hours , the water level drops by 30 cm. 
what is the earliest time when the pool will be empt ??

A)10 A.M.
B)11 A.M.
C) 4 P.M. 
D) 5 P.M. 

Sagot :

to empty the pool, you need to lower the water level by 150cm. since you can only lower it by 30cm every 2 hours (also same as 15 cm per hour), that means it will take you 10 hours.

150cm*(2 hours)/(30cm) = 150*(1/15) = 150/15 = 10.

6 a.m. + 10 hours = 4 p.m.

So the answer is C.) 4 p.m.
Thank you for joining our conversation. Don't hesitate to return anytime to find answers to your questions. Let's continue sharing knowledge and experiences! Your questions find answers at IDNLearn.com. Thanks for visiting, and come back for more accurate and reliable solutions.