Instructions

For the following questions answer them individually

Question 61

A, B and C can independently finish a piece of work in 18 days, ‘x’ days and 27 days respectively. A and C started working together and after 6 days B replaced both of them. If B could finish the remaining work in 16 days, what is the value of ‘x’ ?

Question 62

The floor of a square hall is tiled completely with forty nine square shaped tiles. If the side of each tile measures 2 m, what was the perimeter of the hall ? (in m)

Question 63

The present age of a father is equal to the sum of his son’s and wife’s present ages. The respective ratio between the present ages of his wife and son is 8 : 1 and the difference between his wife’s and son’s present ages is 28 years, what will be father’s age after 4 years ? (in years)

Question 64

A shopkeeper sold first unit of an article to Aria at 20% discount and the second unit of the same article at 40% discount. If the shopkeeper earned an overall profit of 5%, the marked price of the article was what percent of the cost price of the article ?

Question 65

The time taken by a boat to travel ‘x’ km upstream is twice the time taken by the same boat to travel ‘x’ km downstream. If speed of the boat in still water is 12 km/h, what is the speed of current ? (in km/h)

Instructions

These questions are based on the five three digit numbers given below :

346 815 428 271 732

Question 66

If ‘1’ is added to the first digit of every number and ‘1’ is subtracted from the third digit of every number, in how many numbers thus formed will the difference between first and third digits be more than 5 ?

Question 67

If all the numbers are arranged in ascending order from left to right, which of the following will be resultant if first and third digits of the number which is second from the right are multiplied ?

Question 68

If ‘2’ is added to the second digit of every even number and ‘1’ is subtracted from the first digit of every odd number, in how many numbers will a digit appear twice ?

Question 69

If in each number all the digits are arranged in descending order within the number, how many numbers thus formed will be odd numbers ?

Question 70

The positions of the first and the third digits of each of the numbers are interchanged. What will be the resultant if first digit of the highest number thus formed is divided by the third digit of the lowest number thus formed ?