the ratio of buses to cars on river road is 1 to 3. if there are 20 fewer buses than cars on river road, how many cars are on river road? Choose the correct choice from the following answers
A) 100 B) 120 C) 140 D) 30 E) 150
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>D</result>
the ratio of buses to cars on river road is 1 to 3. if there are 20 fewer buses than cars on river road, how many cars are on river road?
multiply(divide(20, subtract(3, 1)), 3)
"b / c = 1 / 3 c - b = 20 . . . . . . . . . > b = c - 20 ( c - 20 ) / c = 1 / 3 testing answers . clearly eliminate abce put c = 30 . . . . . . . . . > ( 30 - 20 ) / 30 = 10 / 30 = 1 / 3 answer : d"