If `x%` of `y` is the same as `4/5` of `80,` then the value of `xy` is a. 320 b. 400 c. 640 d. none of these

If x% of y is the same as (4)/(5) of 80, then the value of xy is a.320b.400c.640d .none of these

If 653xy is divisible by 80 then the value of x+y is

If 653xy is divisible by 80 then the value of x + y is :

If (x,3) and (3,5) are the extremities of a diameter of a circle with centre at (2,y) then the values of x and y are a.(3,1) b.x=4,y=1 c.x=8,y=2d .none of these

If the line joining the points (0,3)a n d(5,-2) is a tangent to the curve y=C/(x+1) , then the value of c is 1 (b) -2 (c) 4 (d) none of these

If the line joining the points (0,3)a n d(5,-2) is a tangent to the curve y=C/(x+1) , then the value of c is 1 (b) -2 (c) 4 (d) none of these

If the line joining the points (0,3) and (5,-2) is a tangent to the curve y=C/(x+1) , then the value of C is (a) 1 (b) -2 (c) 4 (d) none of these

If the line joining the points (0,3) and (5,-2) is a tangent to the curve y=C/(x+1) , then the value of C is (a) 1 (b) -2 (c) 4 (d) none of these