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)
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...
A cuboid has a breadth of 5 cm, and the combined total of its length and height is 23 cm. If the volume of the cuboid is 600 cm³, calculate the percent...
Three cubes of metal whose edge are 6cm, 8cm and 10cm. respectively are melted and a single cube is formed. What is the length of the edge of the newly...
A rectangular park with length and breadth of 13 m and 19 m, is surrounded by a path of 3 m wide. Find the area of the path.
If the ratio of areas of two circle is 25:36, then the ratio of their circumferences will be:
The lateral surface area of a cube is 400 cm2. The length of a cuboid is 50% more than the side of the cube. The breadth of the cuboid is 12 ...
If the 4-digit number x67y is exactly divisible by 9, then the least value of (x + y) is _____.
If the volume of a cylinder is 384π and the ratio of radius to its height is 4:3 then find the curved surface area of cylinder?
The length, breadth and height of a storeroom are 14m, 5m and 8m respectively. If each box occupies 40 m3 of space, then how many boxes can b...
The side of a square is increased by 40%. Find the percentage change in its area?
