Question
A shopkeeper sold a school bag at a profit of 65%. Had
he sold the school bag at 35% profit he would have earned Rs.183 less. Find the cost price of the school bag.Solution
Let the cost price of the school bag be Rs.’x’ According to question, => 1.65x – 1.35x = 183 => 0.3x = 183 => x = 610 So, the cost price of the school bag is Rs.610.
1140, ?, 1130, 1160, 1120, 1170
1, 7, 37, 187, 937, ?
10, 94, 115, 138, 163, ?
124, 180, 108, 198, ?, 220
What will come in place of the question mark (?) in the following series?
3.5, 9.5, 27.5, 81.5, 243.5, 729.5, ?
135, 148, ?, 184, 207, 236
230 192 172 ? 122 100
...11   6   7   12   26    ?    205.5
Find the missing number in the given number series.
1, 2, 3, 6, 11, 20, ?In each of the following series, one term is missing. Find the missing term.
2, 5, 11, 23, 47, ?