The product of twenty less than eight times a number and thirty less than two times a number equals zero. Find the number(s).

a.) 2.5 or 15
b.)-5 or -5
c.) -60 or -80
d.) 60 or 80

Question

The product of twenty less than eight times a number and thirty less than two times a number equals zero. Find the number(s).

a.) 2.5 or 15  
b.)-5 or -5 
c.) -60 or -80 
d.) 60 or 80

hartnn · Answer

twenty less than eight times a number -----> 8n-20 
 thirty less than two times a number ----> 2n-30 
product = 0 
(8n-20) (2n-30) = 0 
can you solve this ?

anonymous · Answer

I'll try...thank you for simplifying it for me

hartnn · Answer

welcome :) ask if you get stuck...