a chef needs 6 L of a solution that is 70% of sugar. he has a 30% sugar mixture and an 80% sugar mixture that he can combine to the 70% mixture. let X represent the number of the liters of the 30% sugar mixture and let Y represent the number of liters of the 80% sugar mixture. how many liters of 30% sugar mixture is there?

1.2 litres of the 30% solution.

Step-by-step explanation:

0.30x + 0.80y = 0.70(x + y)

0.30x - 0.70x + 0.80y - 0.70y = 0

-0.40x + 0.10y = 0

Also

x + y = 6

Multiply the third equation by 10:

-4x + y = 0

Subtracting the last 2 equations:

5x = 6

x = 6/5 = 1.2 litres.

answer: r there any options?

step-by-step explanation:

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.