Question
A mixture of honey and lemon juice is in the ratio 4:1.
If 40% of the mixture is replaced with lemon juice, what will be the new ratio of honey to lemon juice?Solution
Total quantity = 5x litres Honey = 5x × (4/5) = 4x litres Honey left = 4x × 0.6 = 2.4x litres Lemon juice = 5x - 2.4x = 2.6x litres Required ratio = 2.4x : 2.6x = 12 : 13
D irection: Which of the following will replace ‘?’ in the following series
460, 462, ‘?’, 467.5, 470.97
...640Â Â Â Â 322Â Â Â Â Â 164Â Â Â Â Â Â 86Â Â Â Â Â 48Â Â Â Â Â ?
...2401 2402 1203 ? 105 26
...19 8 ? -14 63 - 36
...34, 18, 20, ?, 70, 180
42Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 43Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 46Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
22Â Â Â 23Â Â Â Â 32Â Â Â Â 57Â Â Â 106Â Â Â ?
The series given below contains a sequence of numbers. Accordingly identify the incorrect number.
85, 84, 81, 88, 77, 92, 72
7 13 15 29 31 57
...4, 17, 62, 317, ?, 13267
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