Question
An article is purchased for Rs.2000. The shopkeeper
increases the price by x% and allows a discount of (x – 3)% on the marked price. He ends up with a loss of Rs.102. Find the marked price.Solution
ATQ, 2000 * (100 + x)/100 * (100 – (x – 3))/100 = 2000 – 102 2000 * (100 + x)/100 * (103 – x)/100 = 1898 (100 + x) * (103 – x) = 9490 10300 – 100x + 103x – x2 = 9490 x2 – 3x – 810 = 0 x2 – 30x + 27x – 810 = 0 x(x – 30) + 27(x – 30) = 0 (x – 30)(x + 27) = 0 x = +30, –27 x = 30 Marked price = 2000 * 130/100 = Rs.2600
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2200 after 4 years. If the same amount is investe...
If all the numbers are arranged in descending order from right to left, which of the following will be the product of the all three digits of the number...
Read the directions carefully and answer the following question.
If in the number ‘ 9887532691 ’, the even digits are shifted to the next d...
If we increase all the even digits by 1 and decrease all the odd digits by 3 in the number '9738654859' and after that we arrange the new number so form...
How many pair of digits in forward and backward direction are there in the number “9257364” that has as many numbers between them as in the ...
How many 6s are there in the following number series which are preceded by 4 and followed by 8.
2 4 6 8 4 2 8 6 4 8 7 3 8 6 4 2 4 6 8 7 4 6 9 4
If the numbers 1 and 2 are interchanged, 3 and 4 change places and also the symbols × and ÷, then find the value of 1 + 3 × 2 ÷ 4.
...48 6 3
x 12 11
If ‘ x' is the resultant of the first row, what is the resultant of the second row?
...The average salary of A, B and C is Rs. 22000 while average salary of B, C and D is Rs. 25000. If the average salary of D be 2 times of that of ...
87 25 36
44 22 13
What is the sum of the resultants of the two rows?
...
Relevant for Exams:
