Question 199736
This problem can be done in many ways, ways that include both with and without a calculator.

Using a calculator multiply .8 by .75
The .75 represents the 75%
Your answer will be .6 
Then multiply that by 100 and you get 60
60 seeds will be 75%

Without a calculator,

Multiply .8 by 100.
Just move the decimal places and you get 80.
Then divide it by 10 and you get 8.
Multiply that by 7 and you get 56.
Then add 4 to it for the 5%.