Final answer:
The amount of the discount on the computer costing $1,400 is $350.
Step-by-step explanation:
To find the amount of the discount on the computer, we need to calculate 25% of the original price. First, convert 25% to a decimal by dividing it by 100: 25/100 = 0.25. Then, multiply the original price of $1,400 by 0.25 to find the amount of the discount:
$1,400 * 0.25 = $350
Therefore, the amount of the discount on the computer is $350.