If 9 is subtracted from five times a number the answer is 21 .Then the number is ________ .
5
6
7
9
Solution of the following equation by the method of substitution is _________ .x - y = 12x - y + 6.
x = 4 , y = 5
x = 5, y = 4
x = 3 , y = 2
x = 6 , y = 7
The length of a rectangular field is 8 m more than its width and perimeter of the field is 76 m.Then its length and width is _______ .
23m , 15m
22m,16m
20m , 18m
none of these
The difference between the ages of two girls is 5 years.Their total age is 19 years .Then their ages are ________ .
14 , 5
13 , 6
11,6
12 , 7
Solve 2a + b = 5 3a - 2b = 4
a = 2 , b = 1
a = 1 , b = 2
a = 2, b = 2
a = 4, b = 2
Solve 7/x + 8/y = 2 and 2/x +12/y = 20
x = 3/2 and y = 1/2
x = -1/2 and y = 1/2
x=5/4 and y = 1/3
x = 3/4 and y = 2/3
x + y = 5
x - y = 7 , the solution of the equation is x - y = 7 .
x = -1 , y = 6
x = 6 , y = -1
x = 3,y = -2
x = -2 ,y = 3
Solution of x - 4y = 9, x - 7y = 18 by the method of substitution .
x=-3, y=-3
x = 3 , y = -3
x = 4 , y = 3
x = -4 , y = 5
Solution of 3x - 4y = 10 and 5x - 3y = 24 is __________ .
x = 6, y = 2
x = 4 , y = 4
x = 5 , y = 7
x = 2 and y = 3
The sum of three consecutive whole numbers is 33.Then the numbers are __________ .
10,11,12
9,10,11
11,12,13