We need the picture. So do you. That's why it's printed right there.
E = mc2. An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself.
Answer:
Yes, he is correct.
Step-by-step explanation:
5 is 25% of 20
We know he spends 25 hours.
20 hours are 100%, and 5 hours is 25%.
If we add them, we get 125%.