Question

Mixture A is 15 percent alcohol, and mixture B is 50 percent alcohol. If the two are poured together to create a 4-gallon mixture that contains 30 percent alcohol, approximately how many gallons of mixture A are in the mixture?A. 1.5B. 1.7C. 2.3D. 2.5E. 3.0

Answer 1

Q = 1.84

Explanation:

If we poured 0,5 gallon of mixture A with 0.5 gallon of mixture B we will get a gallon of:

( 15 + 50 )/ 2 = 32.5 %

Now by ule of three

If with 0, 5 gl of A we get 32.5 %

?? x 30

x = (0.5)*(0.3)/ 0.325

x = 0,462 gl t get a mixture of 30%

Then for 4 gl

Q = 4 * 0.462

Q = 1.84