Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.
212 + 212*2 + 212*4 + 212*8 + 212*16 = ?
212 + 424 + 848 + 1696 + 3392 = ?
A. 212 X 4 = 848 X 5 = 4,240
That was the total number of pounds collected,am I right?
212 + 212*2 + 212*4 + 212*8 + 212*16 = ?
212 + 424 + 848 + 1696 + 3392 = ?
First, they collected 212 pounds in the first week.
In the second week, they doubled the previous week's amount, so you need to multiply 212 by 2:
212 x 2 = 424 pounds
In the third week, they doubled the previous week's amount again, so you need to multiply 424 by 2:
424 x 2 = 848 pounds
In the fourth week, they doubled the previous week's amount again, so you need to multiply 848 by 2:
848 x 2 = 1696 pounds
In the fifth week, they doubled the previous week's amount one more time, so you need to multiply 1696 by 2:
1696 x 2 = 3392 pounds
To find the total number of pounds collected during the five weeks, you need to add up the weights of each week:
212 + 424 + 848 + 1696 + 3392 = 6572 pounds
Therefore, the total number of pounds of newspapers collected during the five weeks is 6572 pounds.