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Ilia_Sergeevich [38]
1 year ago
11

Olivia and ray walk to school. olivia walks 1\4 of a mile to school. her walks is 2\3 of the distance that ray walks to school.

waht is the total distance, in miles that ray walks to school? answer
Mathematics
1 answer:
Pepsi [2]1 year ago
8 0
We know that

<span>Olivia walks ---------> 1\4 of a mile to school
</span>
2/3   correspond to ------> 0.6666------> 66.67 %
3/3 correspond to--------> 1--------> 100%
so
if  (2/3)-----------> 1/4 mile
 (3/3)-------------> x
x=(1/4)/(2/3)-----> x=(1/4)*3/2-----> x=3/8------> x-0.375 miles

the answer is
<span>Ray walks to school 3/8 miles (0.375 miles)</span>
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Answer:

Total time = 63 hours

Step-by-step explanation:

First, let us write out the information in the question:

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Next, let us convert the extra time taken to clean the rooms from percentage to time.

40% of normal cleaning time = 40% of 20

= 40/100 × 20 = 0.4 × 20 = 8 minutes

∴ onw-fifth of the rooms take an extra 8 minutes = 28 minutes in total

Next, let us calculate how many of those rooms in the total 175 takes the extra cleaning time:

one-fifth of the rooms takes 28 minutes to clean means that:

1 in every 5 rooms out of the 175 rooms take 28 minutes to clean

∴ Number of rooms with extra cleaning time = 1/5 of 175

= 1/5 × 175 = 0.2 × 175 = 35

∴ 35 rooms take 28 minutes each to be cleaned.

Now let us calculate the total cleaning time:

if 35 rooms take the extra cleaning time, then the number of rooms that have the normal cleaning time is as follows:

175 - 35 = 140

Total time:

140 rooms taking 20 minutes per room = 140 × 20 = 2,800 munites

35 rooms taking 28 minutes per room = 35 × 28 = 980 minutes

Total cleaning time = 2800 + 980 = 3780 minutes

converting to hours (1 hour = 60 minutes)

∴ 3780 minutes = 3780 ÷ 60 = 63 hours (2 days and 15 hours)

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Step-by-step explanation:

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