350 square feet requires 1 gallon of paint. Assign gallons_paint with the amount of paint required for wall_area. Sample output for the given program:
250.0 square feet wall will need:
0.714285714286 gallons of paint

Here's a solution in node.js. Can be easily transcribed to other languages:

var paint_per_sqf = 1/350;
var wall_area = 250.0;
var gallons_paint = wall_area * paint_per_sqf;

console.log(wall_area.toFixed(1) + " square feet wall will need:");
console.log(gallons_paint.toFixed(12) + " gallons of paint");

Answer Link

350 square feet requires 1 gallon of paint. Assign gallons_paint with the amount of paint required for wall_area. Sample output for the given program: 250.0 square feet wall will need: 0.714285714286 gallons of paint

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350 square feet requires 1 gallon of paint. Assign gallons_paint with the amount of paint required for wall_area. Sample output for the given program:
250.0 square feet wall will need:
0.714285714286 gallons of paint