Answer:
Step-by-step explanation:
You want to factor out perfect squares if they exist.

C) One third of the day is 8 hours. Sandra sleeps for 8 hours.
D) One eighth of the day is 3 hours. Sandra visits her family and friends for 3 hours.
I hope this helps you
31,9÷4
319/40
7,975
Step-by-step explanation:
The original number is x.
The new number is 3x + 5.
We know that 0.5(3x + 5) = 16, so 3x + 5 = 32.
3x + 5 = 32, 3x = 27, x = 9.
Hence the original number is 9.