What could you do to the equation 100x + 300 = 500 to change it into x + 3 = 5?

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?

Here is another math questions. i will keep asking different questions. 4^2x=6