1) Rational numbers are the numbers which can be expressed as the fraction.
In mathematical form, you can say: anything like: p/q (where, q≠ 0)
2) An Irrational number is the number which can't be expressed in the form of fraction, it repeats upto infinite digits.
Hope this helps!
Give them the same denominator.
19/30 is what you have left
Multiply the amount of people by the amount of cups they want
4*1 1/3=5 1/3
You would have to make 5 and 1/3 cups of soup
Hope this helps!