Question

a ribbon is 5.2 m long. you cut off 1.86 m, then another 0.75 m. how much ribbon is left? ____ m two boards measure 3.48 ft and 6.75 ft. a third board is 2.9 ft shorter than the total of the first two. length of the third board: ____ ft

Explanation:

First Sub - Question: Length of Remaining Ribbon

Step1: Find the total length cut off

We cut off \(1.86\) m and then \(0.75\) m. To find the total length cut off, we add these two lengths. So, \(1.86 + 0.75=2.61\) m.

Step2: Subtract the total cut off from the original length

The original length of the ribbon is \(5.2\) m. To find the remaining length, we subtract the total cut off (\(2.61\) m) from the original length. So, \(5.2−2.61 = 2.59\) m.

Step1: Find the total length of the first two boards

The first board is \(3.48\) ft and the second is \(6.75\) ft. We add these two lengths: \(3.48+6.75 = 10.23\) ft.

Step2: Find the length of the third board

The third board is \(2.9\) ft shorter than the total of the first two. So we subtract \(2.9\) from the total of the first two (\(10.23\) ft). So, \(10.23−2.9=7.33\) ft.

Answer:

\(2.59\)

Second Sub - Question: Length of the Third Board