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andrey2020 [161]

3 years ago

9

A hot air ballon ascended at the rate of 400 ft per hour for 3 hours and 15 min. What was the total distance that the ballon asc

ended?

1 answer:

Romashka [77]3 years ago

6 0

The balloon ascended 1300ft.

WORK:

3*60=180

180+15=195

195/60=3.25

3.25*400=1300

That is why your answer is 1300ft. Enjoy!

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3 years ago

8 cleaners can clean an office in 3 hours,if the block needs to be cleaned in 2 hours,how many cleaners will be needed?

romanna [79]

Answer:

12 cleaners

Step-by-step explanation:

8 cleaner can clean in 3 hours = 1 office

1 cleaner can clean in 3 hours = $\frac{1}{8}$ part of job

1 cleaner can clean in 1 hours = $\frac{1}{3 \times 8}$ part of job

Let the number of cleaner required to finish the job in 2 hours = x

hence

x cleaner can clean in 1 hours = $\frac{1 \times x }{24}$ part of job

x cleaner can clean in 2 hours = $\frac{2 \times x }{24}$ part of job

Hence

$\frac{2 \times x }{24}=1$

$\frac{2x}{24}=1$

$2x=24$

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4 0

3 years ago