Question

One number is 5 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 779, find the numbers.

Answer 1

97, 485, 197

Explanation:

Given:

• First number = a
• Second number = b
• Third number = c

Then we have:

• b = 5a
• c = 100+a
• a + b + c = 779

Substituting b and c in the third equation:

• a + 5a + 100+a = 779
• 100 + 7a = 779
• 7a = 779- 100
• 7a=679
• a= 679/7
• a = 97
• b= 5*97 = 485
• c = 100+ 97 = 197