Answer:
a: 
Step-by-step explanation:



Use the equation .8x + x = 252
x is the number, and .8 is the decimal equivalent of 80%.
1.8x = 252
x = 140
Answer:
it will take her
minutes more to walk down to Raj's House
Step-by-step explanation:
It took Sheldon
minutes to walk to Raj's house
It also took Sheldon
minutes to use the bus.
To get the time difference between the two transport mechanisms, we subtract their different time durations.
This will be

We can convert this to Mixed fractions as shown
minutes.
Therefore, it will take her
minutes more to walk down to Raj's House
Given that original lenght of the board before cut
meter
Lenght of the board that is left after cutting from the original piece by Hernan
meter
Now we have to find the lenght of the piece which is cut.
To find that we just need to subtract smaller piece from larger piece
Required Length
meter
Required Length
meter
Required Length
meter
reduce the fraction
Required Length
meter
Hence final answer is
meter.