paper?
4. Why there is local and foreign studies in research study and What is the
importance of both sources?
tandard of research?
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Let mass of one kind of tea x kg be mixed with another kind of tea mass y kg
SP of x kg tea = Rs 80x
Loss = (CP - SP)/CP
0•2 CP = CP - 80x
0•8CP = 80x. Or CP = 100x
Similarly
Profit = (SP - CP)/CP
0•25CP = 200y - CP
1•25CP = 200y . Or CP = 20000y/125 =160y
Total CP of x and y kg of tea = 100x + 160y
SP of x and y kg of tea = (x + y )×150
Profit = (SP - CP)/CP
0•25 = {(x + y )150 - (100x + 160y)}/(100x +160y)
0•25(100x + 160y) = (50x - 10y)
25x + 40y = 50x - 10y
25x = 50y
x/y = 2/1
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