The president of the United States does not have to be good in math. This is because they have an army of the best mathematicians and the most advanced technology at their hands. One might need to be good at basic math and calculations, but not proficient in subjects such as calculus or trigonometry.
I hope this helps! :)
Answer: 45kg
Explanation:
Since 25% of the ingot consists of zinc, it implies that (100 - 25) = 75% of copper is contained in the ingot.
We then calculate 75% of 60kg to get the amount of kilograms of copper that the ingot of brass contain. This will be:
= 75% × 60
= 75/100 × 60
= 0.75 × 60
= 45kg
I think his major roles are to speak & notify the outside world on what's going on around the world & the United States.
