THE COST OF AN ELECTRICAL GADGET AND THE COST OF PLUMBING MATERIAL WERE IN THE RATIO 8:6 LAST YEAR, THIS YEAR EACH COST HAS REDUCED BY Ghc 4.00 and their ratio changed to 7:5, respectively taking the initial cost of the electrical gadget to be Ghep and that of the plumbing material to be Ghe q, calculate the value of p and q
Answers
Given : cost of an electrical gadget and the cost of a plumbing material were in the ratio 8:6 last year. This year, each cost was reduced by 4.00 and has changed to 7:5 respectively
To find : initial cost of the electrical gadget & plumbing material
Solution:
cost of an electrical gadget = 8x = p
cost of a plumbing material = 6x = q
each cost was reduced by 4.00
cost of an electrical gadget = 8x - 4
cost of a plumbing material = 6x - 4
New ratio 7 : 5
=> (8x - 4)/ (6x - 4) = 7/5
=> 5(8x - 4) = 7(6x - 4)
=> 40x - 20 = 42x - 28
=> 2x = 8
=> x = 4
p = 8x = 8 * 4 = 32
q = 6x = 6 * 4 = 28
initial cost of the electrical gadget p = 32
initial cost of the plumbing material q = 28
Learn More:
The ratio of the number of students in three classes A,B and C is 3:7 ...
https://brainly.in/question/7571333
The ratio of linear to volume expansion of a cube is 1:12. Find side ...
https://brainly.in/question/19162448