What is the number?
A number is increased by 3 and then multiplied by 4. The result is the same as if the number were first multiplied by 2 and then increased by 28.
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 question:
Increased by 3, then multiplied by 4: 4(x + 3)
Multiplied by 2, then increased by 28: 2x + 28
Set the expressions equal:
4(x + 3) = 2x + 28
Expand the left side:
4x + 12 = 2x + 28
Now solve:
4x - 2x = 28 - 12
2x = 16
x = 8
Final Answer: 8