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Let monthly of person is Rs. 100x Monthly savings = 0.25 times; 100x = Rs. 25x Monthly expenditure = 100x ndash; 25x = Rs. 75x His increased monthly income = 1.35 times; 100x = Rs. 135x His monthly expenditure now = 135x ndash; 25x = 110x Percentage increase in expenditure = [(110x ndash; 75x)/75x] times; 100 ~ 46.6%
A group of students consists of 25 boys and the rest are girls. The average marks scored by boys is 72, and the average marks scored by girls is 84. If ...
Average of 20 numbers is 90. Average of first 8 numbers is 103 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numb...
Average marks scored by Vineet in five subjects are 80. The average marks scored by him (excluding his highest and lowest marks) are 72 and lowest marks...
Average of four numbers is 16. Sum of smallest and largest number is 45. If difference between other two numbers is 1, then find the square of second sm...
The average of 4, 6, 8, 12 and x is 7 and the average of x, 9, 13, 15 and y is 9. What is the value of 2x – 3y?
The average age of the husband, wife, and their child 3 years ago was 24 years and that of the Wife and the child 4 years ago was 19 years. The present ...
Average of four numbers is 28. Sum of smallest and largest number is 57. If difference between other two numbers is 1, then find the square of second sm...
The average of 24 numbers is 48. If 5 is added to each number, then the new average will be:
The average of 30 numbers was initially calculated as 45. However, it was later found that one of the numbers had been incorrectly recorded as 83 instea...
