Question
A shopkeeper adds 40% to the cost price of a chair and
sells it after offering a 25% discount on the marked price. If the chair is sold for Rs. 2,100, find the profit he earns.Solution
ATQ,
Let the cost price of chair be Rs. '100b'
Marked price = 1.40 × 100b = Rs. '140b'
Selling price = 0.75 × 140b = Rs. '105b'
So, 105b = 2,100
Or, b = 20
Therefore, required profit = 5 × 20 = Rs. 100
5, 18, 39, 68, 105, ?
230 192 172 ? 122 100
...5, 6, 14, 45, 184, ?
15, 23, 30, 36, 41, ?
3, 8, 27, 124, ?
1236, 1445, 1675, 1933, 2226, ?
13, 29, 65, 129, ?, 373
12, 33, 45, 78, 123, 201, ?
What will come in place of the question mark (?) in the following series?
36, 85, ?, 230, 330, 451
250, 279, 311, 349, 396, ?