Question
A 130-litre mixture contains petrol and water, only in
ratio 8:5, respectively. How much water should be added in the mixture so that the quantity of water becomes 50% of quantity of resultant mixture?Solution
Quantity of water in the initial mixture = 130 × (5/13) = 50 litres Quantity of petrol in the initial mixture = 130 × (8/13) = 80 litres Since, we’re not adding petrol, 130 litres of petrol will represent 50% of the new mixture. So, total quantity of resultant mixture = 130 ÷ 0.5 = 160 litres Quantity of water to be added = 160 – 130 = 30 litres
3. 8, 15, 24, 34, 48, 63
Select the wrong term in the series.
44, 47, 41, 50, 38, 53, 40
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
A series is given with one wrong term. Select the wrong number from the given series.
17, 29, 43, 59, 77, 97, 112
8, 20, 48, 108, 232, 482
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
Find the wrong number.
17, 25, 37, 47, 65, 81
Arrange the following words in a logical and meaningful order.
1. Monkey
2. Elephant
3. Rat
4. Fly
5. Lion
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
