Mathematics mcqs

water tax is increased by 20% but its consumption is decreased by 20 %. then, the increase or decrease in the expenditure of the money is:--------?

water tax is increased by 20% but its consumption is decreased by 20 %. then, the increase or decrease in the expenditure of the money is:--------?

4 % decrease

5 % decrease

4 % increase

no change

two vessels p and q contain 62.5% and 87.5% of alcohol respectively. if 2 litres from vessel p is mixed with 4 litres from vessel q, the ratio of alcohol and water in the resulting mixture is-------?

two vessels p and q contain 62.5% and 87.5% of alcohol respectively.

none of these

16:07

14:05

16:05

two varieties of wheat – a and b costing rs. 9 per kg and rs. 15 per kg were mixed in the ratio 3 : 7. if 5 kg of the mixture is sold at 25% profit, find the profit made?

two varieties of wheat – a and b costing rs. 9 per kg and rs. 15 per kg were mixed in the ratio 3 : 7.

rs. 13.50

rs. 15.50

none of these

rs. 14.50

two trains are moving in opposite directions 60 km/hr and 90 km/hr. their lengths are 1.10 km and 0.9 km respectively. the time taken by the slower train to cross the faster train in seconds is---------?

two trains are moving in opposite directions 60 km/hr and 90 km/hr. their lengths are 1.10 km and 0.9 km respectively.

45

48

36

49

two trains 140 metres and 120 metres are running in the same direction with speeds 40 kmph and 60 kmph respectively. in what time will the faster train pass the slower one?

two trains 140 metres and 120 metres are running in the same direction with speeds 40 kmph and 60 kmph respectively.

0.60 minutes

0.78 minutes

0.36 minutes

0.42 minutes

two tests had the same maximum mark. the pass percentages in the first and the second test were 40% and 45% respectively. a candidate scored 216 marks in the second test and failed by 36 marks in that test. find the pass mark in the first test?

two tests had the same maximum mark. the pass percentages in the first and the second test were 40% and 45% respectively.

none of these

136

164

128

two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. the waste pipe can empty the full cistern in?

two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes.

23 min

7 min

9 min

13 min

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