Question 1203315
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Here is a fast and easy informal way to solve any 2-part mixture problem like this, if formal algebra is not required.<br>
Observe/calculate that 35% is 15/50 = 3/10 of the way from 20% to 70%.
That means 3/10 of the mixture is the ingredient with the higher percentage of fruit juice.<br>
ANSWERS:
3/10 of 50 pints, or 15 pints, of the drink with 70% fruit juice; the other 50-15 = 35 pints of the drink with 20% fruit juice.<br>