Question

the cost of manufacture of an article is made up of four components P, Q, R and S which have a ratio of 2:3:5:7 respectively. is there respect to changes in the cost of components are +20%, -20%, +15%, -30%, then what would be the percentage change in the cost?

Answer 1

Answer:

the ratio of the cost of components

= 2 : 3 : 5 : 7

Explanation:

%change in the cost of P & Q

= 20 +(-20) + [(-20×20)/100]

=20-20 - 4 = -4 %

%change in the cost of P,Q & R

= (-4) +(15) + [(-4×15)/100]

= -4+15 - 0.6 = 10.4 %

total %change in the cost of P,Q ,R and S

= (10.4) + (-30) + [10.4×(-30)/100]

= 10.4 - 30 - 3.12

= - 22.72%

Answer:

%change in the cost of article is 22.72%