Question

If the sum of the interest on 850 for 3 years and 1250 for 4 years at the same rate of interest be
302, find the rate of interest in percentage per annum​

Answer 1

Answer:

Amount accumulated in 4 years=900

• Amount accumulated in 4 years=900Amount accumulated in 3 years=850
• Amount accumulated in 4 years=900Amount accumulated in 3 years=850Therefore interest in 1year=(900–850)=50
• Amount accumulated in 4 years=900Amount accumulated in 3 years=850Therefore interest in 1year=(900–850)=50So got interest of 150 after 3 years and 200 after 4 years.
• Amount accumulated in 4 years=900Amount accumulated in 3 years=850Therefore interest in 1year=(900–850)=50So got interest of 150 after 3 years and 200 after 4 years.Amount =Principal+Interest
• Amount accumulated in 4 years=900Amount accumulated in 3 years=850Therefore interest in 1year=(900–850)=50So got interest of 150 after 3 years and 200 after 4 years.Amount =Principal+Interest850=Principal+150
• Amount accumulated in 4 years=900Amount accumulated in 3 years=850Therefore interest in 1year=(900–850)=50So got interest of 150 after 3 years and 200 after 4 years.Amount =Principal+Interest850=Principal+150So principal=850–150=700