Let the speed of stream be ‘x’ km/hr. So, speed of boat in still water = 5 × x = 5x km/hr Downstream speed of boat = 5x + x = 6x km/hr According to question; 6x = 72/6 = 12 Or, x = 2 Upstream speed of the boat = 5x – x = 4x = 4 × 2 = 8 km/hr Required time taken = 88/8 = 11 hours
In a college election a candidate who got 40% of the total votes polled was defeated by 126 votes. Assuming that there were only two candidates in the e...
In a train, 45% of the passengers are females. Out of total number of passengers, 65% have unreserved tickets out of which 27% are females. How much per...
If radius of a sphere is decreased by 48%, then by what percent does its surface area decrease?
In village P, the number of male voters is 45% more than the number of female voters. The ratio of male voters in village P to village Q is 8:5. If the ...
Rajesh spent 48% of his monthly income on food and 52% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
Suyash have total amount of Rs.2600 out of which, he spent 30% on food, 45% of the rest on travelling. Out of remaining amount he spends Rs.561 on misce...
A student multiplied a number by 2/5 instead of 5/2. What is the percentage error in the calculation?
If x is 80% of y, then what percent of 2x is y?
An Urn has 120 Pink, 60 Green and 80 White Cards. 25% of Pink Cards and 50% of Green Cards are taken away, percentage of White Cards at present is
Person P allocated 35% of his salary to his son for school fees. From the remaining amount, he saved 40% in his bank account. The...
