ONGC Government Jobs Exams Numerical Ability Ratio and Proportion

IN what proportion must rice that cost Rs.20/kg be mixed with rice that costs RS.25/kg so that the mixture is worth Rs.22/kg?
a.1:3
b.3:1
c.2:3
d.3:2

Read Solution (Total 2)

d)
IN 3:2 proportion must rice that cost Rs.20/kg be mixed with rice that costs RS.25/kg so that the mixture is worth Rs.22/kg.
10 years agoHelpfull: Yes(2) No(0)

d. 3:2
If 'x'kg of Rs. 20/kg & 'y' kg of Rs. 25/kg is mixed, then
20x+25y/(x+y)=22
On solving, x/y=3/2
10 years agoHelpfull: Yes(2) No(0)

ONGC Other Question

Out of 8 crew members 3 particular members can sit only on the left side.Another 2 particular members can sit on the right side.Find the number of ways in which the crew can be arranged so that four men can sit on each side Two pipes A and B can fill a tank in 10 and 20 minutes respectively.If both pipes are opened simultaneously,after how many minutes should pipe B be closed so that the tank is full in 8 minutes?
A. 3 min
B. 4 min
C. 2 min
D.5 min