Susie has eight pieces of string. Three pieces are 7.8 inches long, and five pieces are 9.2 inches long. How many inches of strength does Susie have altogether?
I don't understand!🤔🤨
3*7.8 + 5*9.2 =?
31.2
31.2
31.2
To find out how many inches of string Susie has altogether, we need to add up the lengths of all the pieces of string she has.
First, let's add up the lengths of the three pieces that are 7.8 inches long:
3 * 7.8 = 23.4 inches
Next, let's add up the lengths of the five pieces that are 9.2 inches long:
5 * 9.2 = 46 inches
Now, we can add these two totals together to get the total length of all the pieces of string:
23.4 + 46 = 69.4 inches
Therefore, Susie has a total of 69.4 inches of string altogether.