Determine the value of the investment after the 7 -year period. Convert an interest rate of \( 10 \% \) p.a. compounded quarterly to an annual effective interest rate.

15. Salman bought 40 chairs at \( ₹ 175 \) each. He sold one-fourth of them at a loss of \( 8 \% \). At what price each must he sell the remaining chairs so as to gain \( 10 \% \) on the whole deal? 16. A shopkeeper sold two electronic gadgets for \( ₹ 44000 \) each. The shopkeeper made a

If the price of a television is \( 15,400 \mathrm{LE} \) after a \( 20 \% \) discount, what was the price before the discount? \( \begin{array}{ll}\text { (a) } 12,320 \mathrm{LE} & \text { (b) } 3,080 \mathrm{LE} \\ \text { (c) } 18,480 \mathrm{LE} & \text { (d) } 19,250 \mathrm{LE}\end{array} \)

\( * 22 \) Un commerçant achète 80 kg de poisson à 325 Fle kilogramme. II revend le kg de poisson 450 F. mais par suite de la chaleur il doit vendre les 30 der - niers kilogrammes 110 F seulement. Calculez: a) Le prix d'achat du poisson: b) Le prix de vente total de ce poisson: c) Le bénéfice réalisé ou la perte subie.

अरविन्द ने एक धनराशि 1 जनवरी, 2012 को बेंक में \( 8 \% \) वार्षिक साधारण ब्याज की दर से निवेश की, उसे 3,144 की धनराशि 7 अगस्त, 2012 को बैंक से प्राप्त हुई। उसने कितनी धनराशि बेंक में निवेश की थी?

Nidhi deposited \( ₹ 7,500 \) in a bank which pays her \( 4 \% \) interest per annum compounded annually. Find the amount and the interest received by her after three years.