Since the distance travelled by a boy (going to school and coming back from school) is equal. So, average speed = 2xy/(x + y) Average speed = (2 x 50 x 30)/(50 + 30) Average speed = (2 x 50 x 30)/80 = 37.5 km/hr
Select the correct combination of mathematical signs to sequentially replace the signs, to balance the following equation.
(12*7*6)* 13 *6
Which of the following is correct?
Which two signs should be interchanged to make the given equation correct?
225 + 5 × 3 ÷ 5 – 7 = 133
After interchanging '- ' and '+ ' , 6 and 7 , which of the following equations becomes correct?
...Which one of the following is correct?
28 * 7 * 8 * 10
Which signs should be interchanged to make the given equation correct.
45 ÷ 5/3 + 10 × 2/5 - 5 = 95
The given equation has been solved on the basis of a certain rule. Find the correct answer for the unsolved equation on that basis.
If p × ...
Which signs should be interchanged to make the given equation correct.
45 × 5 + 60 ÷ 12 - 25 = 165
...If ‘#’ denotes ‘-‘, @ denotes ‘×’, ‘$’ denotes ‘+’ and ‘%’ denotes ‘÷’, then
20 $ 15 # 10 @ 45 % 15
...After interchanging ÷ and × , 4 and 8, which of the following equations becomes correct?
