Question
A sold a mobile phone to B at a gain of 25% and B sold
it to Cat a loss of 10%. If C paid 5625 for it, how much did A pay (in) for the phone?Solution
Let, the A paid for the mobile phone = x So, x × (125/100) × (90/100) = 5625 ⇒ x = 5625 × (100/125) × (100/90) ⇒ x = 5000 ∴ A paid Rs. 5000 (in Rs.) for the phone
58   83   133   ?    308    433
60, 100, 160, 240, ?, 460
In each of the following number series, one term is missing. Find the missing term.
7, 14, 28, 56, 112, ?
12, 19, 33, ?, 117
4, 12, 36, 108, ?, 396
945, 1890, ?, 504, 144, 32
What will come in place of the question mark (?) in the following series?
11, 13, 19, ?, 51, 81
Find the missing number, in the given number series.
60, 150, ?, 450, 450, 225
31Â Â Â 40Â Â Â 51Â Â Â 64Â Â Â 79Â Â Â Â ?
- What will come in place of the question mark (?) in the following series?
13, 15, 18, 23, 30, ?