math

Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together?

A. 12 minutes
B. 15 minutes
C. 21 minutes
D. 23 minutes
E. 28 minutes

  1. 👍 0
  2. 👎 0
  3. 👁 704
  1. Jim 1/30 pools per minute
    Sue 1/45 pools/min
    Tony 1/90 pools/ min

    Total = 3/90 + 2/90 + 1/90 = 6/90 = 1/15 pools/min
    (1/15) pools /min * t = 1 pool
    t = 15 min

    1. 👍 0
    2. 👎 0
  2. Tony fills 1/6 in a quarter hour, not 1/4
    1/2 + 1/3 +1/6 = 1 pool

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Isabel pumped 7 gallons of water into her pool each minute for 63 minutes. What was the total change in the amount of water in the pool.

  2. Physics

    A 5/8 inch (inside) diameter garden hose is used to fill a round swimming pool 7.3m in diameter.How long will it take to fill the pool to a depth of 1.0m if water issues from the hose at a speed of 0.50m/s ?

  3. math

    Two pipes can be used to fill a pool. Working together, the two pipes can fill the pool in 2 hours. The larger pipe can fill the pool in 3 hours less time than the smaller pipe can alone. Find the time to the nearest tenth of an

  4. math

    Three water pipes are used to fill a swimming pool. The 1st pipe alone takes 8 hours to fill the pool, the 2nd pipe alone takes 12 hours to fill the pool, and the 3rd pipe takes 24 hours to fill the pool. If all 3 pipes are opened

  1. math

    A sludge pool is filled by two inlet pipes. One pipe can fill the pool in 14 days and the other pipe can fill it in 22 days. However, if no sewage is added, waste removal will empty the pool in 35 days. How long will it take the

  2. MATH

    An inlet pipe can fill an empty pool in 3 hours. Another pipe can fill the same pool in 4 hours. How long will it take to fill the pool if both pipes are on? how would this equation be set up?

  3. Maths

    It would take 120 minutes to fill a swimming pool with water from 5 taps. How many minutes will it take to fill the pool of only 3 taps are used?

  4. Math

    Two hoses are connected to a swimming pool. Working together, they can fill the pool in 4 hr. The larger hose, working alone, can fill the pool in 6 hr less time than the smaller one. How long would it take the smaller one, woking

  1. algebra

    Pump A can fill a swimming pool in 6 hours and pump B can fill the same pool in 4 hours. The two pumps began working together to fill an empty pool, but after 40 minutes pump B broke down, and pump A had to complete the job alone.

  2. math

    Initially a pool contains 350 gallons of water. A hose is placed in the pool, and the water is turned on. The hose adds 4.8 gallons of water per minute. Write an equation that shows the relationship between the total amount of

  3. Math

    Two pumps are filling a pool. One of them is high power and can fill the pool alone in 2 hours less time than the other can do so. Given that, working together, both pumps can fill the pool in 144 minutes, how long, in hours, will

  4. Math

    When two hoses are connected to a swimming pool, they can fill the pool in 4 hours if both are open. If only the larger hose is open, it can fill the pool in 6 hours less than the smaller hose. How long will it take tge smaller

You can view more similar questions or ask a new question.