Natasha spent 1/4 of the day cleaning the kitchen. she spent 1/3 of that time washing dishes. what fraction of the day did natasha spend washing dishes?

4/12 because the LCD is 12 and what you do the denominator you have to do to the top so in order yo get 12 you have to multiply 3x4 so you multiply 1x4 to get 4/12
For cleaning the kitchen 4x3 is 12 so the top is 1x3 which is 3/12

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.