Question

can you please help with question4.2

QUESTION 4 4.1 Two aeroplanes leave two different airports, 1000km apart from each other, at 9h00 in the morning. They fly towards each other. The one flies at a speed of 250km/h and the other at 350km/h. At what time will they pass each other? (3) 4.2 Find the amount of interest that a person will earn if he invests an amount of R9000 for 30 months, at an interest rate of 6% per annum, with the interest compounded semi-annually. (Leave your answer as an expression in exponential form as you may not use a calculator.)

Answer 1

Solution of the problem 4.2 is given below.

402 We have to We have to find the interest that a om will ea sill earn if he invest is an amount R9000 fave 30 months at an interests at 6% per- annum So, after finest 6 month the amount sum of the amount o invested amount and the interest will be 9000 (it boxe) 2 =9000 ( It Com Xt) = 9000(1+ Since the amount will be invested far 30 months , so alther 30 monts the ne sum of the invested amount and the interest will be come 9000 (13) = 9000 (1+306) So, the amount of interest the person will gets 9000 (1+300) 5-9000 = 9000 [6177ool 5-]