00:01
So this question is asking us, if shoppers spent $23 .5 billion on mother's day and father's day combined, and they spent 4 .7 bill more for mother's day than father's day, how much do they spend $4 .7 bill more for mother's day than father's day, how much do they spend? for each holiday.
00:57
So i'm going to start by assigning certain variables to express these pieces of information so that we can work with them in a mathematical way.
01:09
So i'm going to say for mother's day and father's day combined 23 .5 billion equals x plus y, x being spent on mother's day, y being spent on father's day.
01:32
And then for this second piece of information, it says that $4 .7 billion more is spent on mother's day than father's day.
01:44
So then that's saying that x, or the amount spent on mother's day, equals y plus $4 .7 billion.
02:00
So then if you see here, we have x isolated, which means that we can substitute that in our first equation, which has x and y on the same side.
02:11
So then we can say 23 .5 billion equals y plus 4 .7 billion plus y...