x% of y is y% of a.4% of a b. 5% of a c. 20 % of a d. none of these

If x % of a is the same as y % of b , then z % of b is a.(x y)/z % of a b. (y z)/x % of a c. (x z)/y % of a d. none of these

If 8% of x=4% of y, t h e n 20 % of x is a.10 % of y b. 80 % of y c. 16 % of y d. none of these

40 % of 4. 5+? % of2/3=20 % of 10 20 b. 25 c. 30 d. 35 e. none of these

(x% of y+y% of x)=?a.x% of y b.y% of x .2% of xy d.xy% of 3

A shopkeeper purchased 70 kg of potatoes for Rs. 420 and .sold the whole lot at the rate of Rs. 6.50 per kg. What will be his gain percent? a. 4 1/6% b. 6 1/4% c. 20 % d. 81/3% e. none of these

If x% of 25 is equal to y% of 15 and y% of 15 is equal to 25% of 20, then find the value of x.