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2x +3y =7 … (1) And 2x+2 -3y+2 =7 4 ×2x – 3 ×3y =7 … (2) Let, 2x =a and 3y = b Then (1) and (2) …. a + b =7 4a – 3b =7 On solving equations- a =4, b =3 now – 2x =4 =22 x =2 And 3y =3 =31 y =1. (2,1)
The quantity of sugar in a 28 percent sugar solution is 91 grams. What is the total quantity of the solution?
If x – y = 1 and x2 + y2 = 41 where x, y ≥ 0, then the value of x + y will be:
The area of a square is 38 sq. cm more than the area of a rectangle of length 19 cm and breadth 17 cm. What will be the area of incircle of the square?
The area of a rectangular field is 24% of the area of a square field with a perimeter of 80 meters. If the rectangular field has a perimeter of 40 meter...
If the length of a rectangle is increased by 30% and its breadth is decreased by 20%, then the area of the rectangle will be increased or decreased by h...
The sides of a triangular park are 96 m, 110 m and 146 m. Its area is equal to the area of a field in the shape of a rhombus, one of whose diagonals is...
The circumference of a circle is 110 cm and the length of the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the re...
If the volume and radius of a cylinder is 19250 cm3 and 35 cm respectively then find the height of the cylinder?
A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. I...
