Number Puzzle
A number is multiplied by 3, then 5 is added to the result. The final answer is the same as when the number is doubled and then increased by 8. What is the number?
Word Problem
A bridge is built across a river. One quarter of the bridge is over the left bank of the river and one third of the bridge is over the right bank. The river is 120 m wide. How long is the bridge?
Let the number be x.
ReplyDeleteAccording to the problem:
3x + 5 = 2x + 8
Subtract 2x from both sides:
x + 5 = 8
Subtract 5 from both sides:
x = 3
Answer: The number is 3.