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igcse edexcel maths percentage change question

Himari invests 200 000 yen for 3 years in a savings account paying compound interest.

The rate of interest is 1.8% for the first year and x% for each of the second year and the third year.

The value of the investment at the end of the third year is 209 754 yen.

Work out the value of x.
Give your answer correct to one decimal place.

I've already worked out the amount of money after the first year, which I think is 203 600. I then did 209 754 - 203 600 which is 6154. I don't know what to do next.

Reply 1

Sasuto

I did 6154 / 203600 = 0.0302...
But the answer is 0.015 and it's half of 0.0302. Is it because it's for two years? I thought you'd have to square root it?

Reply 2

n4yr_4

Original post by Sasuto

I did 6154 / 203600 = 0.0302...
But the answer is 0.015 and it's half of 0.0302. Is it because it's for two years? I thought you'd have to square root it?