Question

principal =400 rate=9by2 time=3years4monthsfind SI amd amount

Answer 1

hey
here's your answer !!


Principal = Rs. 400
Rate per annum = 9/2 %
Time = 3 years 4 months
= 3 4/12 years ,
= 3 1/3 years ,
= 10 / 3 years .
_____

Therefore ,
Simple Interest = ( P * R * T ) / 100
= 400 * ( 9 / 2 ) * ( 1 / 100 ) * ( 10 / 3 )
= ( 400 * 9 * 10 ) / ( 2 * 100 * 3 )
= 36000 / 600
= 60 rs. { answer }
_____

Therefore ,
Amount = principal + simple interest
= 400 + 60 rs.
= 460 rs. { answer }
_____

hope it helps !!

Answer 2

SI =P ×R×T upon 100
400 ×9×3 upon100×2×4
SI=18 upon 2
amount= 18+400upon 2