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Let the total journey be = 42 km (LCM of the denominator of 4/7, 5/6) At 10.30 am, Robert covers 4/7 of the whole journey i.e., 42 × 4/7 = 24 km At 4.00 pm, Robert covers 5/6 of the whole journey i.e., 42 × 5/6 = 35 km Therefore, Robert covers (35 - 24) = 11 km in (4.00 pm – 10.30am) = 5.5 hours. Then the speed of a Robert = 11/(5.5 ) = 2 km per hour Time taken by Robert to cover 24 km = 24/2 hours =12 hours Then the starting time of the journey is 10.30am - 12 hours = 10:30 pm
Mishti bought 20 kg apples for Rs 60 per kg, b kg apples for Rs 70 per kg and (b + 6) kg apples for Rs 50 per kg. She mixed all type of apples together ...
In a Company the average income of all the employees is Rs. 22000 per month. Recently the company announced an increment of Rs. 2000 per month for all t...
Average of four numbers is 25. Sum of smallest and largest number is 54. If difference between other two numbers is 2, then find the square of second sm...
The average of ten numbers is A. If c is subtracted from each number except the tenth and (c-1) is subtracted from the tenth number, then what will be t...
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced t...
The average age of 21 children is 30 years. 4 new children, whose average age is 15 years, join them. Find the average age of the 25 children.
The average number of sweets distributed in a class of 90 students is 6. If lsquo;xrsquo; number of students newly joined the class and the average beco...
The average value of the property of Anil, Sunil, and Vinay is Rs. 90 lacs. The value of the property of Anil is Rs. 30 lacs less than the value of the ...
The average of n numbers is 66. If each of 54% of the numbers is increased by 13 and each of the remaining numbers is decreased by 12, then the n...
The average of five even numbers is 38. If we replace two of these even numbers, 88 and 92, with a single even number X, the new average decreases by 4....
