(a) The price of an article marked \( \$ 100 \) is increased by \( 20 \% \). What is the new price? (b) A ball costs \( \$ 75 \). There is an \( 8 \% \) increase on the price. (c) A schat is the increased enrolment of 500 is increased by \( 30 \% \). What is the new enrolment of the school? (d) A resident school takes 300 litres of milk each day. During the holidays it is decreased by \( 10 \% \). How many litres of milk are taken during the holidays? (e) 120 bottles decreased when \( 5 \% \) got broken. How many bottles remained? (f) Reduce a mass of 90 kg by \( 33 \frac{1}{3} \% \). What is the new price? (g) The regular price of an article was decreased from \( \$ 225 \) by \( 30 \% \).

Exercice 1 On place un capital de 3000 euros à \( 2 \% \) par an, à intérêts simples, On rappelle le principe du placement à intérêts simples : à la fin de chaque année, les intérêts sont calculés uniquement sur le capital initialément placé. On modélise le capital acquis tous les ans par une suite \( \left(\mathrm{C}_{n}\right) \). Ainsi on pose : \( \mathrm{C}_{0}=3000 \), 1. Calculer le capital \( \mathrm{C}_{1} \) acquis à la fin de la première année, et \( \mathrm{C}_{2} \) à la fin de la deuxième année. 2. En écrivant une relation de récurrence liant \( \mathrm{C}_{n+1} \) et \( \mathrm{C}_{n} \), démontrer que la suite \( \left(\mathrm{C}_{n}\right) \) modélisant le capital est une suite arithmétique, dont on précisera la raison et le premier terme. 3. A l'aide de la calculatrice, calculer \( \mathrm{C}_{10} \). Que représente cette valeur?

Which of the following is not a necessary condition for effective price discrimination? a. The producer must be a pure monopolist. b. There must be at least two distinguishable groups of consumers. c. The firm must face a downward-sloping demand curve. d. The seller must be able to prohibit buyers from easily reselling the product to

(c) Diberi bahawa harga kos sepasang kasut Lipo ialah RM 100 dan dijual dengan keuntungan sebanyak RM 50 pada tahun 2019. Hitung harga jual kasut Lipo yang sepadan pada tahun 2022 . Given that the cost price of a pair of Lipo shoes is RM 100 and sold at a profit of RM 50 in 2019. Calculate the corresponding selling price of the Lipo shoes in the year 2022. [2 markah] [2 marks]

Una persona compro una computadora a crédito por \( \$ 18,000 \) y acordo con el almacén una tasa de interés del \( 15 \% \) y realizar 9 pagos bimestrales. ¿Cuali es el valor de cada pago que debe realizar para liquidar la deuda?

1. Ano ang kahulugan ng pagtitipid at pag - impok? 2. Ano ang kaugnayan ng pagtitipid at pag - impok? 3. Bakit mahalaga ang pagiimpok? 4. Ano - ano ang mga paraan upang makapag - impok o makaipon?