Fill in the blanks in the table.PrincipalRate ofinterest(p.c.p.a)Time�

Fill in the blanks in the table.PrincipalRate ofinterest(p.c.p.a)Time InterestAmounti. Rs. 42007%3 yearsii.6%4 yearsRs.1200iii. Rs.80005%Rs. 800iv. 5%Rs.6000Rs. 18000v.2(1/2)% 25 yearsRs. 2400

Answer»

i. Total interest = (P x R x T)/100

= (4200 x 7 x 3)/100

= Rs. 882

Amount = Principal + interest

= 4200 + 882

= Rs. 5082

ii. Total interest = (P x R x T)/100

∴ 1200 = (P x 6 x 4)/100

∴ (1200 x 100)/(6 x 4) = P

∴ P = Rs. 5000

Amount = Principal + interest

= 5000 + 1200

= Rs. 6200

iii. Total interest = (P x R x T)/100

∴ 800 = (8000 x 5 x T)/100

∴ (800 x 100)/(8000 x 5) = T

∴ T = 2 years

Amount = Principal + interest

= 8000 + 800

= Rs. 8800

iv. Amount = Principal + Interset

∴ 1800 = Principal + 6000

∴ Principal = Rs. 12000

Total interest = (P x R x T)/100

∴ 6000 = (12000 x 5 x T)/100

∴ (6000 x 100)/(12000 x 5) =T

∴ T = 10 years

v. R = 2(1/2)% = 2.5%

∴ Total interest = (P x R x T)/100

∴ 2400 = (P x 2.5 x 5)/100

∴ 2400 = (P x 25 x 5)/(100 x 10)

∴ (2400 x 10 x 100)/(25 x 5) = P

∴ P = Rs. 19200

Amount = Principal + interest

= 19200 + 2400

= Rs. 21600