Review question

# If an AP has $S_{10}=3S_5$, what's the ratio of $u_{10}$ to $u_5$? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R8907

## Question

An arithmetic progression is such that the sum of the first 10 terms is 3 times the sum of the first 5 terms. Find the ratio of the 10th term to the 5th term.

Given further that the 5th term is $0.14$, calculate the sum of the first 200 terms.