Math, asked by abhinav211s, 10 months ago

what principal will earn interest of Rs 812 at 3whole 1/2 %/annum in 7whole 1/4year​

Answers

Answered by rimplachandel669
6

Answer:

S.I=P×R×T÷100

812=P×7×29÷100×2×4

812=p×203÷800

812×800÷203=P

principal =3200

Answered by kanishk195
1

Answer:

3200

Step-by-step explanation:

S.I =P×T×R/100

GIVEN

S.I =812

Rate of interest =3 1/2

=3×2+1/2

=7/2 %

Time=7 1/4

=7×4+1/4

=29/4

Then,

S.I=P×T×R/100

=> S.I×100 = P×T×R

=> 812×100 = P×29÷4×7÷2

=> 81200 = P×203÷8

=> 81200×8÷203 = P

=> P = 400×8

=> P = 3200

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