Problema Solution
Automotive maintance: Synthesis
The radiator in Natielies car contain 6.3 L of antifreeze and water.
This mixture is 30% antifreeze how much of this mixture should she drain and replace with pure antifreeze sothat there will be a mixture of 50% antireeze
Answer provided by our tutors
alcohol -alcohol + alcohol = alcohol
0.30*6.3 -0.30x + 1.00x = 0.50*6.3
Multiply thru by 100 to get:
30*6.3 - 30x + 100x = 50*6.3
70x = 20*6.3
x = (2/7)6.3
x = 2*0.9
x = 1.8 Liters (amt. of mixture that should be removed and replaced).