Answer:
6.30 q + 14.4 = 4.50 ( q + 4 )
Explanation:
Here, q quarts of cranberry juice is mixed with 4 quarts of apple juice,
So, the quantity of total juice = ( q + 4 ) quarts,
Also, the price of cranberry juice is $6.30 per quart and the price of apple juice is $ 3.60 per quart while the price of resultant mixture is $ 4.50 per quarts,
⇒ 6.30 × q + 3.60 × 4 = 4.50 × total quantity of resultant mixture
( ∵ Total cost = cost of per unit × number of units )
⇒ 6.30 q + 14.4 = 4.50 ( q + 4 )
Which is the required equation.