Question
A tank contains petrol and diesel in the ratio 9:5. If
10% of the mixture is removed and replaced with diesel, what is the new ratio of petrol to diesel?Solution
Total quantity = 14x litres Petrol = 14x × (9/14) = 9x litres Petrol left = 9x × 0.9 = 8.1x litres Diesel = 14x - 8.1x = 5.9x litres Required ratio = 8.1x : 5.9x = 81 : 59
Find the missing number.
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...
Choose the correct alternative that will complete the given number series. 2, 9, 28, 65, ?, 217
In the following question, select the missing number from the given alternatives.
45, 15, 60, 75, 135, ?
Study the given pattern carefully and select the number that can replace the question mark [?] in it.
Study the given pattern carefully and select the number that can replace the question mark [?] in it.
First row: 6, 5, 191
Second row: 9, ...
Select the number that can replace the question mark (?) in the following series.Â
Select the number from the given option that can replace the question mark (?) in the following series:
32, 16, 24, 60, ?, 945
Find the missing term :
...
Select the missing number from the given responses.
Find the missing term in the given series:
4      3.5      ?           22.875               ...
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