Charlie is making a poster with an equal number of pictures in each row.
He is choosing whether to use 10, 20, 30, or 40 pictures in each row.
He is also choosing whether to have 4, 5, or 6 rows.
He needs one sticker for each picture on the poster.
Charlie creates this table to show the total number stickers he will need for each choice.
A multiplication table shows that 10 times 4 equals 40, 10 times 5 equals 50, 10 times 6 equals 60, 20 times 4 equals 80, 20 times 5 equals 100, 20 times 6 equals 120, 30 times 4 equals 120, 30 times 5 equals 150, 30 times 6 equals 180, 40 times 4 equals 160, 40 times 5 equals 200, and 40 times 6 equals 240.
If Charlie uses 160 stickers in total, how many rows will he have on his poster?
How many stickers will he put in each row?
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stickers in each row
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From the table, we can see that the number of stickers in each row is either 10, 20, 30, or 40 and the number of rows is either 4, 5, or 6.
To find the number of rows, we need to find a combination of the number of stickers in each row and the number of rows that equals 160.
By looking at the options in the table, we can see that it is not possible to have 160 stickers with 10 stickers in each row, as the closest we can get is 40 stickers in each row (10 x 4 = 40).
Similarly, we can eliminate the possibility of having 160 stickers with 20 stickers in each row, 30 stickers in each row, or 40 stickers in each row.
Therefore, the number of rows will be 4.
To find the number of stickers in each row, we divide the total number of stickers (160) by the number of rows (4).
160 / 4 = 40
Therefore, Charlie will have 4 rows on his poster and there will be 40 stickers in each row.