A rope of 40 feet long is cut into two pieces. If one piece is 18 feet longer than the other, what is the length, in feet, of the shorter piece?
9
11
18
22
None of them
Description (বিবরণ) :
প্রশ্ন: A rope of 40 feet long is cut into two pieces. If one piece is 18 feet longer than the other, what is the length, in feet, of the shorter piece?
ব্যাখ্যা:
Let x = the length of the shorter piece
So, x + 18 = the length of the longer piece
Since the lengths of the two pieces must add to 40 feet, we can write: x + (x + 18) = 40
= > 2x + 18 = 40
= > 2x = 40 - 18
= > 2x = 22
∴ x = 11
