The average of the areas of 2 similar triangles is 706.5 m2 whose perimeters are in the ratio of 6: 11. What is 20% of the difference (in m2) in areas of both triangles?
The ratio of the areas of the similar triangles is (6/11)2 =36/121 Given the average area is 706.5 m², the total area is 1413 m². Let the areas be A₁ = 36x and A2 = 121x. ATQ- 36x+121x =1413 157x =1413 x =1413/157 Solving, x = 9 m². Thus, A₁ = 324 m² and A2 = 1089 m². Difference = 765 m². 20% of the difference = 153 m². So, the answer is 153 m².
Select the correct combination of mathematical signs that can sequentially replace the “@” sign and balance the following equation.
16@5@4@2@...
Which two signs should be interchanged in the following equation to make it correct:
490 ÷ 70 + 5 × 28 – 15 = 48
Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.
11 * 4 * 55 ...
If '÷' means '+', '+' mean '-', 'x' means '÷' and '-' means 'x', then what will be the value of the given expression:
12 – 6 x 2 + 5 ÷ 9
If ‘P’ means ‘+’, V means ‘×’, T means ‘-‘ and ‘Q’ means “÷’ , then find the value of the expression given below:
30 P ...
If '+' means '-', 'X' means '+', '-' means '÷', and '÷' means 'X', then what is the value of the following expression?
72 - 9 + 16 X 8 ÷ 4 X 1...
Which two signs should be interchanged to make the following equation correct?
42 – 32 ÷ 2 + 8 × 6 = 10
Select the number from among the given options that can replace the question mark (?) in the following series.
24, 35, 51, 73, 102, ?
...Which two signs need to be interchanged to make the following equation correct?
62 – 14 × 75 ÷ 15 + 50 = 82
Which expression is correct?
