Question
A train covers a distance of 60 km at the speed of 45
km/h the next 30 km distance covers with a speed of 40 km/h and last 100 km with the speed of 80 km/h find the average speed of the train?Solution
Since the train covers different distance with different speeds. So, Average speed = Total Distance/Total Time Total distance = 60 + 30 + 100 = 190 km Time1 = 60/45, Time2 = 30/40 & Time3 = 100/80 Total Time = 60/45 + 30/40 + 100/80 Therefore, Average Speed = 190/(60/45 + 30/40 + 100/80) = 57 km/hr
If digit 2 is interchanged with digit 1, then what will be the value of the following equation?
9 + 6 ÷ 4 × 21 – 5=?
Read the given statement and conclusions carefully. Decide which of the given conclusions is/are definitely true from the statement.
Statement: F...
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In the following question, select the missing number from the given series.
14, 6, 5, 6.5, 12, ?
Select the figure from among the given options that can replace the question mark (?) in the following series.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance...
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A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
OP, ON, MN, ML, ?
Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.
