The number of longitudes that would rotate 2 hours can be found to be 30°.
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<h3>How do longitudes translate to hours?</h3>
The lines of longitude are measured such that every 15° of longitudes denotes an hour.
This means that for every hour the Earth rotates, it would have gone 15° in longitudes.
The rotation that would take 2 hours is therefore:
= 2 x 15
= 30°
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Answer:
6 x=2.
Step-by-step explanation:
i did it
Manuel needs 20 liters of the 8% and 5 liters of 20% mixtures to be mixed so as to get 30 liters of a mixture of water and 10% lemon juice.
Let x represent the amount of 8% lemon juice in liters and y represent the amount of 20% lemon juice in liters.
Since Manuel wants to produce a 30 liters mixture from 8% lemon juice and 20% lemon juice, hence:
x + y = 30 (1)
Also, Manuel wants 30 liters of a mixture of water and 10% lemon juice, hence:
8% of x + 20% of y = 10% of 30 liters
0.08x + 0.2y = 3 (2)
Solving equation 1 and 2 simultaneously; multiply equation 1 by 0.2 and subtract equation 2 from the result:
0.12x = 3
x = 25 liters
x + y = 30
25 + y = 30
y = 5 liters
Manuel needs 20 liters of the 8% and 5 liters of 20% mixture
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