Please hurry .competitive exam in this month.

the quantity of juice is 1/5 of the total quntity=40 ml

the quantity of waterr is 4/5 of the total quantity=160 ml

she poured out 100 ml of drink , i.e she poured out  1/5 = 20 ml of juice and  4/5=80 ml of water.

so remaining quantity of juice in the glass is=20 ml

remaining quantity of waterin the glass=80 ml

she aded 100 ml water, so now total quantity of water=80+100=180 ml

now you can find the required ratio.