Question

48. The mean weight of some men is 56kg. The sum of their weight is 392kg. Find the number of men. *




a. 1/7



b. 7



c. 14



d. 28
49. What percent of 80 is 20? *




a. 20



b. 25



c. 30



d. 15
53. The cost of a pen and a copy is Rs.70. The cost of 5 copies is Rs. 100. What is the cost of a pen? *




a. 20



b. 30



c. 50



d. 170
What should be the selling price of a radio costing Rs. 10,000 is sold at 15% gain? *
१ अङ्क



a. Rs 1500



b. Rs 8500



c. Rs 10,015



d. Rs 11,500
57. The number 250 is mistakenly written as 275. What is the error percentage? *
१ अङ्क



a. 9.09%



b. 10%



c. 11%



d. 12%
59. A triangle whose one of the angles is greater than 90 degree is called …… *




a. acute angled triangle



b. right angled triangle



c. obtuse angled triangle



d. equilateral triangle

Answer 1

Answer:

4:21

82

the Spanish Flu. He grew up hearing war stories from his ur.cles who had served overseas, and never knowing those in his family and community who died of influenza. He was baptised into life in the dirty thirties and the Great Depression where he wore socks on his hands to keep them warm in winter because he had no mitts.

At the outbreak of the Second World War, he was a young, strapping lad of 17, eager to defend his country, to escape the labour intense work in the woods and to get a regular meal. In the summer of 1943, he arrived in Italy and served with the West Nova Scotia Regiment until he was found killed in action on the battlefield at The Gothic Line. But the stretcher bearers later found him alive when they gathered the dead. He spent four months in hospital recovering from the loss of a lung before he returned to his regiment where he spent the duration of the war. He returned home to the province he loved in February 1946, battle worn, emotionally scarred and determined to find a better life for himself.

Answer 2

Answer:

Let x be the number of boys, then the number of girls will be (60−x).

The mean weight of boys is 50 kg, then the total weight of boys will be, 50x.

The mean weight of girls is 30 kg, then the total weight of girls will be 30(60−x)=1800−30x.

The mean weight of 60 students is 40 kg, so

totalno.ofstudents

weightofgirls+weightofboys

=40

60

1800−30x+50x

=40

x=

20

600

x=30

So, the number of boys is 30 and the number of girls is (60−30)=30.