A doctor is planning to buy an X-ray machine for his hospital. He has two options. He can either purchase it by making a cash payment of Rs. 5 lakhs or Rs. \( 6,15,000 \) are to be paid in six equal annual instalments. Which option do you suggest to the doctor assuming the rate of return is \( 12 \% \) ?

Luis ganha um salário-base de \( \$ 150,00 \) por semana, com uma comissão adicional de \( 14 \% \) sobre tudo que ele vender. Luis vendeu \( \$ 6.050,00 \) em produtos na semana passada. Quanto foi o salário total de Luis na última semana?

3. ( Ingreso marginal ) Si la ecuación de demanda es \( 10 p+x+0.01 x^{2}=700 \), calcule el ingreso margina cuando \( p=10 \)

A continuously compounded savings account had an initial deposit of \( \$ 10000 \) and 10 years later has a balance of \( \$ 13125.87 \). At what interest rate was the savings account?

a. Mr Sarfo borrowe \( \$ 25.00 \) from AFLAK finarcial services at \( 21 \% \) simple intrest per annum for 3 years. if he was able to pay back the loan in 2 years af equal yearly instalments, how much did he pay each year?

3. Juan dispone de un capital de \( \$ 530.000 \), si invierte cierta cantidad a un \( 2 \% \) y otra cantidad \( 5 \% \), por las dos inversiones obtiene \( \$ 16.300 \). ¿Cuánto invirtió a cada tasa de interés?