A trainee receives ₹5000 in the first month of her internship
MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series
Problem
A trainee receives ₹5000 in the first month of her internship. Her monthly stipend increases by a fixed amount, forming an arithmetic progression. The average stipend over the first k months is ₹7000, while the average over the first 2k months is ₹10000. Determine (i) the value of k and (ii) the monthly increment in stipend.