Let the cost of the soft drink = C then the price of the sandwich was 3.5 times as much = 3.5C
And
C + 3.5C = Total Cost
C + 3.5C = 9
4.5C = 9 divide both sides by 4.5
C = 9/4.5 = $2.00 for the soft drink
And 3.5C = 3.5(2.00) = $7.00 cost of the sandwich
Step-by-step explanation:
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Answer:
I believe it is 18
If you write out the count by's then the last number they both have in common is 18.
Hope this helps, have a wonderful day!
si.
I think its C.