1.The price of oil is increased by 20%,as a result a family decrease consumption by 25%.The expenditure of the family on oil will be
1).90%increase
2).10%incraese
3).90%decrease
4).10%increase.
4).10%increase.
Exp: (120/100)×(75/100)×100=90.
100-90=10%(should be decrease)
2.A rectangular grassy plot 110 m by 65 m has a gravel path 2.5 m wide all round it on the inside. Find the cost of gravelling the path at 80 paise per sq. Meter
1).Rs.680
2).Rs.860
3).Rs.608
4).None.
1).Rs.680
Exp: overall area of the grassy plot is 110 x 65 =7150 sq. meters.The area of the grassy plot
after applying the gravel path is 105 x 60=6300 sq. meters.Area of the gravel path is 7150 –
6300 = 850 sq.mtrs.Hence x 0.80=Rs.680 .
3.A game of the football with 11 players lasts for exactly 80minutes.There are 4 substitutes that alternate equally.If each player plays for the same length of the time,What is the duration?
1)120m
2)20m
3)84m
4)40m
2)20m
Exp: 80/4=20m.
4.20 workers working 5hours a day can finish the work in 20 days.If the workers went to work for 4hours a day.How many more workers are required to complete the work in same 20days?
1)7
2)4
3)5
4)6
3)5
Exp: workers required for 4h=>(5/4)×20=25.
25-20=5.
5.Pencils are bought at 3 for Rs.2 and sold at 2 for Rs.3.Find the gain percentage
1)100%
2)110%
3)125%
4)115%
3)125%
Exp: [3(3)-2(2)]/4=5/4
In percentage=> (5/4)×100=125%.
1).90%increase
2).10%incraese
3).90%decrease
4).10%increase.
4).10%increase.
Exp: (120/100)×(75/100)×100=90.
100-90=10%(should be decrease)
2.A rectangular grassy plot 110 m by 65 m has a gravel path 2.5 m wide all round it on the inside. Find the cost of gravelling the path at 80 paise per sq. Meter
1).Rs.680
2).Rs.860
3).Rs.608
4).None.
1).Rs.680
Exp: overall area of the grassy plot is 110 x 65 =7150 sq. meters.The area of the grassy plot
after applying the gravel path is 105 x 60=6300 sq. meters.Area of the gravel path is 7150 –
6300 = 850 sq.mtrs.Hence x 0.80=Rs.680 .
3.A game of the football with 11 players lasts for exactly 80minutes.There are 4 substitutes that alternate equally.If each player plays for the same length of the time,What is the duration?
1)120m
2)20m
3)84m
4)40m
2)20m
Exp: 80/4=20m.
4.20 workers working 5hours a day can finish the work in 20 days.If the workers went to work for 4hours a day.How many more workers are required to complete the work in same 20days?
1)7
2)4
3)5
4)6
3)5
Exp: workers required for 4h=>(5/4)×20=25.
25-20=5.
5.Pencils are bought at 3 for Rs.2 and sold at 2 for Rs.3.Find the gain percentage
1)100%
2)110%
3)125%
4)115%
3)125%
Exp: [3(3)-2(2)]/4=5/4
In percentage=> (5/4)×100=125%.