2x+5=47, solve algebraically to find x, the answer
15 / 330 = 20 / x...15 gal. to 330 miles = 20 gal to x miles
cross multiply because this is a proportion
(15)(x) = (20)(330)
15x = 6600
x = 6600/15
x = 440 <=== 20 gallons will take u 440 miles
For number 1a. the answer is 7 to 26 or
7:26 or
For number 2a. the answer is 8 to 28 or
8:28 or
For number 3a. the answer is 12 to 13 or
12:13 or
For number 4a. the answer is 19 to 12 or
19:12 or
For number 5a. the answer is 29 to 10 or
29:10 or
For number 6a. the answer is 11 to 28 or
11:28 or
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