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mihalych1998 [28]
3 years ago
7

А,

Mathematics
1 answer:
stepladder [879]3 years ago
6 0
Hey I don’t understand
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A man drove his car at 80km per hr for 1 and a quarter hrs .He rested for 45mins and then covered 240km, at the same time. Calcu
prisoha [69]

Answer:

Probably 128 km/h, but maybe 98.5 km/h. See below.

Step-by-step explanation:

What does "at the same time" mean?

If it means that he covered the 240 km in the same time as he convered the 80 km, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 1.25 hour = 2.5 hour

average speed = (total distance)/(total time) = 320 km / 2.5 hour = 128 km/h

If it means he covered the 240 km in the same time he covered the 80 km plus the rest, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour + 45 min = 240 km in 1.25 houir + 0.75 hour = 240 km in 2 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 2 hour = 3.25 hour

average speed = (total distance)/(total time) = 320 km / 3.25 hour = 98.5 km/h

3 0
2 years ago
Jane receive a $80 gift card for a coffee store .She used it and buying some coffee that cost $7.82 per pound after buying a cof
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Answer:

she bought 6 pounds of coffee

Step-by-step explanation:

80 minus 33.08=46.92

46.92÷7.82=6

so the answer is 6

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3 years ago
Samantha went shopping for a new dress. Last week she saw it being sold for $75. When she returned to the store today, she saw t
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Answer:

Step-by-step explanation:

20%

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At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.5 per day on a typical Wednesday. Let
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If you add 2 cubes of sugar to a 6 ounce cup of tea and 3 cubes of sugar to a 9 ounce cup of tea, which one is sweeter?
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Step-by-step explanation:

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