WEBVTT
00:00:00.280 --> 00:00:08.040
Raymond went to the supermarket and bought a bar of chocolate for three dollars and three cents.
00:00:08.360 --> 00:00:14.680
When he returned home, he found he had four dollars and sixty-one cents left.
00:00:15.000 --> 00:00:21.600
Write an equation to find how much money Raymond had before going to the supermarket, and then solve it.
00:00:22.280 --> 00:00:30.880
Well first off, letโs define a variable called ๐ which represents the amount of money in dollars that Raymond had before going to the supermarket.
00:00:31.240 --> 00:00:42.920
So he started off with ๐ dollars, he then spent three dollars and three cents, and he was left with four dollars and sixty-one cents.
00:00:43.360 --> 00:00:45.160
So we can write that down.
00:00:45.600 --> 00:00:55.960
Weโve started off with ๐ dollars and then we took away three point o three dollars, three dollars and three cents.
00:00:56.360 --> 00:01:04.440
And that left us with four point six one dollars, four dollars and sixty-one cents.
00:01:04.880 --> 00:01:10.000
So weโve done the first part of the question; we have written our equation.
00:01:10.400 --> 00:01:20.760
Now we need to go on and rearrange and solve that equation to find out how much money Raymond had before he went to the supermarket.
00:01:21.320 --> 00:01:23.000
Now I want to know what ๐ is.
00:01:23.440 --> 00:01:44.520
So if I add three point o three to both sides of my equation, then on the left-hand side Iโve got ๐ minus three dollars and three cents plus three dollars and three cents; these two numbers here are gonna cancel out, which just leaves me with ๐.
00:01:44.800 --> 00:01:58.440
And on the right hand side, Iโve got four dollars and sixty-one plus three dollars and three, which is seven dollars and sixty-four cents.
00:01:58.920 --> 00:02:08.600
So there we have our answer: Raymond had seven dollars and sixty-four cents before going to the supermarket.