Question

find the time:amount= 31,192,principal =28000,Rate =7.2%p.a.​

Answer 1

Answer:

Time = 1.58 years

Step-by-step explanation:

Amount = 31192

Principal = 28000

S.I. = Amount - Principal

     = 31192 - 28000

     = 3192

Rate = 7.2% p.a.

Time = ??

Time = S.I. * 100

               P * R

Time = 3192 * 100

           28000 * 7.2

Time = 1.58 years

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Answer 2

Answer:

Step-by-step explanation:

A = P(1 + rt)

∴31192=28000(1+7.2×t)

∴31192=28000×1+7.2t

∴31192=28000+7.2t

∴31192÷28000=7.2t

∴1.114=7.2t

∴1.114÷7.2=t