The sum is 160/(1-r)=1280 where r is the common ratio,
1/(1-r)=1280/160=8
Inverting we get 1-r=1/8, r=7/8.
Try photo math or google it. Best luck!
4 over 5 is the correct answer
Answer:
the prime numbers between 30 and 59 are 31, 37, 41, 43, 47, 53
The answer should be 5 over 4
