২৩০৪১
A union contract specifies a 6 percent salary increase plus a Tk. 450 bonus for each employee. For a certain employee, this is equivalent to 8 percent salary increase. What was this employee's salary before the new contract?
উত্তর
Tk. 22,500
সমাধান
Suppose, employee's salary before the new contract was = Xas per condition, 6% salary increase + 450 = 8% salary increase 8% salary increase - 6% salary increase = 450 2% salary increase = 450 2% of X = 450 2X/100 = 450 X = 22500So, Employee's salary before the new contract was = 22500 tk (Ans.)
২৩০৪২
Arif, Afzal and Anwar invest Tk. 5000, Tk. 7000 and Tk. 12000 respectively in a business. If the profits are distributed proportionately, What share Tk. 10000 profit should Anwar receive?
উত্তর
5000
সমাধান
Share of Anwar = {12000 / (5000 + 7000 + 12000)} x 10000 = 5000 TK.
২৩০৪৩
If a>b and a>c, which of the following must be greater that 0?
উত্তর
b-a/c-a
সমাধান
a>b or, b - a<0 or, b - a is - ve.
a>c or, c - a<0 or, c - a is - ve.
So, (b - a)/(c - a) = + ve>0.
২৩০৪৪
A certain type of wall for a house costs Tk. 10.50 per square yard. What does it cost to make a wall 4 yards wide and 60 feet long?
উত্তর
Tk. 840
সমাধান
60 feet = 20 yardsarea of wall = 4 yards * 20 yards = 80 square yard 1 square yard require = 10.50 tk80 square yard require = 10.50*80 = 840 tk (Ans)
২৩০৪৫
If 4 people can pack 20 cartoons per hour, how many hours will 8 people take to pack 40 cartoons?
উত্তর
1
সমাধান
4 people can pack 20 cartoons in = 1 hour
so, 1 people can pack 1 cartoon in = (1*4)/20 hour
therefore, 8 people can pack 40 cartoons in = (1*4*40)/(20*8) = 1 hour
Ans: 1 hour
২৩০৪৬
How many square centimeters of construction paper Jesmin needs in order to exactly cover, with no overlap, 5 sides of a cube with edges that are 12 centimeters long?
উত্তর
720
২৩০৪৭
The total cost of a bouquet of roses at a flower shop depends on the number of roses ordered. The vase costs Tk. 5 and each rose costs Tk. 2.25. Which equation can be used to find c, the total cost of a bouquet with r roses?
উত্তর
c=5+2.25r
২৩০৪৮
Karim can buy single poster boards for 80 paisa each or a package of 12 poster boards for Taka 7.50. How much more (in Taka) would Karim have to pay for 3 dozen poster boards if he buys them individually than if he buys them in packages?
উত্তর
6.30
২৩০৪৯
A carpenter needs 4 boards, each 2 feet 10 inches long,. If wood is sold only by the feet, what is the minimum length, in feet, of wood he must buy?
উত্তর
12
২৩০৫০
Rahim is two years older than Karim who is twice as old as Ashraf. If the ages of the three total 27 years, how old is Karim?
উত্তর
10
সমাধান
Let, Rahim as R, Karim as K, Ashraf as AR = 2 + KK = 2A or A = K/2now, R+K+A = 27 2 + K+K+K/2 = 27 2K+K/2 = 25 5K = 50 K = 10So, Karim is 10 years old (Ans)