Work in fractions of the pool the pumps can drain per hour:-

1/6 + 1/4 = 1/x where x is the time to drain the pool by the 2 pumps together

4x + 6x = 24
10x = 24
x = 2.4 hours <===== answer

8 0

3 years ago

four houses each have four floors. On each floor are four apartments, with four doors in each apartment. On each door are four h

alexgriva [62]

256 hinges. 4 x 4 = 16. 16 x 4 = 64. 64 x 4 = 256

7 0

3 years ago

A street vendor in NYC sells burgers and hotdogs. The burgers cost her $0.37 and the hotdogs cost her $0.45. Her daily supplies

Oxana [17]

So, the first thing you should do is break it down. First how much space can she have, and how many hotdogs and hamburgers would she have know the amount of space. Then you would find the amount of money she would make if she sold the food, and how much she would spend for inventory. Hope this helps!

4 0

2 years ago

Five 6-sided dice are rolled. What is the probability that exactly two of the dice show a 1 or a 2?

Likurg_2 [28]

Either 4/30 or 2/15. they ate both the same thing but one is reduced

3 0

2 years ago