Question

A sum of 4000 becomes4500 in 2 years under simple interest . In how many years will 5000 become 5625 under simple interest at the same rate of interest?​

Answer 1

Step-by-step explanation:

SI=pnr/100

5000–4000=4000×5×r/100

(1000×100)/4000×5=r.

r=100000/20000=5%

Now new rate will be 5+2=7%

A=4000+pnr/100=4000+(4000×5×7)/100=4000+40×5×7=4000+1400= 5400 ans

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