If Rs 640 amounts to rupees 768 in 2 years 6 months what will the rupees 850 amount to in 3 year at the same rate per annum
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Answer:
Step-by-step explanation:
given P1= principle=rs640
and amount = A1 = rs768
therefore, simple interest = SI1 = amount - principal
= A1-P1 = rs768 - rs640
= rs128
Time= T1 = 2yrs. and 6 months = 2.5 yrs.
S.I= P×R×T/100
therefore, Rate = R1= SI1×100/P1×T1
= rs128×100/rs640×2.5
=rs12800/rs1600
= 8%
principle given again = P2 = rs850
rate% we have find out =R2= 8%
time given = T2 = 3 yrs.
SI2 = P2 × R2 × T2 /100
= 850×8×3/100
= rs204
A = P2 + SI2
= 204+850
= rs 1054
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