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Andrej [43]
3 years ago
11

Round 6.75 to the nearest hour

Mathematics
1 answer:
Ronch [10]3 years ago
6 0

Answer:

6.75 hour is approximated to 7 hours

Step-by-step explanation:

Given

Time = 6.75 hours

Required

Round to the nearest hour

The time given is given in base 10 and the conversion can be done in two ways.

1. Convert directly by approximation.

Approximating 6.75 to the nearest whole number gives 7.

Hence, 6.75 hours = 7 hours

2. Convert to time equivalent then approximate time

This is done as follows

6.75 hours = 6 hours + 0.75 hour

Convert decimal to fraction

6.75 hours = 6 hours + \frac{75}{100} hour

Simplify to lowest term

6.75 hours = 6 hours + \frac{3}{4} hour

Convert hour to minute

There are 60 minutes in an hour

6.75 hours = 6 hours + \frac{3}{4} * 60 minutes

6.75 hours = 6 hours + 3 * 15 minutes

6.75 hours = 6 hours + 45 minutes

The rule of time approximation is that; if the minutes is between 0 and 29, it'll be rounded to 0; else, it'll be rounded up to 1

Going by the rule, 45 minutes will be approximated to 1 hour.

This gives

6.75 hours \frac{=}{} 6 hours + 1 hour

6.75 hour \frac{=}{} 7 hours

Hence, 6.75 hour is approximated to 7 hours

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