Question
In a vessel the ratio of alcohol to water is 6:1. If 21
liter of mixture is taken out from the vessel and 1 liter water is added, then the ratio of alcohol to water in the final mixture becomes 21:4. Then, what will be the initial quantity (in liters) of alcohol in the vessel?Solution
ATQ, we can say that Let the initial alcohol & water in vessel be 6x & x liters respectively. So, {(6x − 21 × 6/7)}/{(x − 21 × 1/7 +1)} = 21/4 (6x−18)/(x−3+1) = 21/4 24x − 72 = 21x − 42 3x = 30 x = 10 liters  Initial the quantity of alcohol in vessel = 6x = 60 liters
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2200 after 4 years. If the same amount is investe...
12 5 20
m 13 8
If ‘m’ is the resultant of the first row, what the resultant of the second row?
...48 6 3
x 12 11
If ‘ x' is the resultant of the first row, what is the resultant of the second row?
...A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series:-
The downstream speed of a boat is 6 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
Select the option that is related to the third number in the same way as the second number is related to the first number.
25:16::41:?
How many pair of digits in forward and backward direction are there in the number “9257364” that has as many numbers between them as in the ...
What will be the resultant if the first digit of the lowest number is multiplied by the third digit of the highest number?
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
196 * 7 * 45 * ...
Relevant for Exams:
