Question
A school bus arrives at the school on time when it
maintains an average speed of 50 km/h. However, if the bus travels at an average speed of 40 km/h, it arrives 18 minutes late. Determine the total distance covered by the bus.Solution
Let the distance travelled by bus be 'D' km and usual time taken by bus to reach school be 'T' hours. So, 'D' = 50T -------- (I) And, 'D' = 40 x [T + (18/60) ] Or, 'D' = 40T + 12 -------- (II) From equation I and II, we get, 50T = 40T + 12 Or, 10T = 12 So, 'T' = (12/10) = 1.2 Therefore, required distance = 50T = 50 x 1.2 = 60 km
If ‘%’ means (÷), ‘&’ means (+), ‘$’ means (×), and ‘@’ means (-), then what is the value of the expression:
25 & 35 % 7 @ 14 $...
Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.
16 * 5 * 35 ...
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
65 * 45 * 25 * 5 * 35 * 60
Out of the total number of players, 100/3 % are in hotel X and the remaining are in hotel Y. If 20 players from hotel Y are shifted to hotel X, then the...
Which two signs should be interchanged to make the given equation correct?
8 – 42 + 15 × 20 ÷ 4 = 346
If the following interchanges are made in signs, then what would be the value of the following expression?
48 X 63 + 2 ÷ 9 - 35
Interch...
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
12* 6 * 3 * 54 * 9 * 12
Which of the following mathematical operator are placed in place of alphabet given in the equation to make it true?
54 a 7 c 9 f 45 h 12 j 15
...Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
30 * 4 * 2 * 1 * 121
Select the correct combination of mathematical signs that can sequentially replace the '$' signs and balance the given equation.
6 $ 42 $ 14 $ 6 $ 40 = -16
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