A mixture of 66 liters contains whiskey and water in the ratio 4:7 how many liters of whiskey and water each must be added to the mixture to make the ratio 2:3?
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X%y= (y2-x3)
X&y=(x2-y3)+(x%y)
f(a)=(a2+a3)
what is the value of ((x%y) – (x&y) ) (x%y)-1 where x=2, y=1 ?
(a) 11/7 (b) -3/7 (c) 3/7 (d) -11/7
Solution: 3/7
162. The sum of three numbers is 98. If the ratio of first to second is 2:3 and that of the second to the third is 5:8 then the second number is :
Solution: a+b+c=98 à (1)
a/b=2/3 à a=(2/3)b à (2)
b/c=5/8 à c= (8/5)b à (3)
Substitute equations (2) and (3) in Equation(1)
b=30
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