Question

Q. The cost of manufacture of an article is made up of four components A, B, C and D which have a ratio of 3: 4: 5: 6 respectively. If there are respective change in the cost of +12%, -18%, -30% and +43% and initial cost of the article is RS. 342, find the new cost of the article.

• A. Rs. 355.68
• B. Rs. 348.10
• C. Rs. 356.64
• D. Rs. 360.2
• E. None of these

Answer 1

The correct option is A Rs. 355.68

Assume the cost components to be valued at 3x,4x,5x and 6x respectively.
New cost of components = 3.3x, 3.28x, 3.5x and 8.58x respectively
The original total cost was18x, the new one is 18.72x
The percentage change is $\frac{0.72}{18}=4\%$
New cost of the article = Rs. $342\times 1.04$ =Rs.355.68