In what ratio ,water must be mixed with fruit juice costing Tk.24 per liter .so that the juice would be worth of Tk.20 per liter .

A 1:4

B 1:5

C 1:6

D 2:5

Correct Answer: Option B

প্রশ্নমতে ,24j=20(j+w)
             বা,24j=20j+20w
             বা,4j=20w
             বা,j/w=20/4
            বা,w/j=1/5
অতএব ,water:juice =1:5