Find the original number
A number is doubled, then 7 is added.
The result is 31.
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
ReplyDelete2x + 7 = 31
Subtract 7 from both sides:
2x = 24
Divide both sides by 2:
x = 12
Final Answer:
The number is 12