1. A man walked diagonally across a rectangular field whose length and width are 4 m and 3 m respectively. What percent of the distance is saved by not walking along the edges?

27.6%

28.57%

28.4%

33.4%

2. In an examination 40% students failed in Mathematics and 30% failed in English, while 20% failed in Mathematics and English both. What percentage of the students passed in both?

48%

50%

70%

None of these

3. A 15 litre mixture of alcohol and water contains 20% alcohol and rest water. If 3 litres of water is added in it, then percentage of alcohol in the new mixture will be:

33.33%

20%

25%

16.67%

4. The length of a rectangle is increased by 60%. By what percentage would the width have to be decreased to maintain the same area?

66%

60%

75%

37%

5. Due to an increase of 15% in the price of milk, a family reduces its consumption of milk by 15%. What is the effect in the expenditure of the family on account of milk?

3.5% decrease

2.25% decrease

3% decrease

2.50 % increase