Question

5. I invested R1 000 000 four years ago. The investment is now
R1 200 000. Interest
was calculated quarterly.
(a) How many periods are there?
(b) What was the nominal rate of interest?
​

Answer 1

Step-by-step explanation:

Cost Price(CP) of Type 1 material is Rs. 15 per kg

Cost Price(CP) of Type 2 material is Rs. 20 per kg

Type 1 and Type 2 are mixed in the ratio of 2 : 3. 

Hence Cost Price(CP) of the resultant mixture 

=(15×2)+(20×3)(2+3)=(15×2)+(20×3)(2+3)

=(30+60)5=905=18=(30+60)5=905=18

=> Price per kg of the mixed variety of material = Rs.18

Answer 2

Answer:

a) 3

b. 2 200 000

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