decreased by 8%
decreased by 4%
remains the same
increased by 20%
54
72
48
432
24
28
40
48
76
72
40
100
প্রশ্নঃ The purchase price of 12 pencils equals to the sales price of 8 pencils. What is the rate of profit in %?
বর্ণনাঃ
Let,
Purchase price of 12 pencil = Tk. x
Purchase price of 1 pencil = x /12
Salse price of 8 pencil = Tk. x
Salse price of 1 pencil = x/8
Profit = x/8 - x/12 = ( 3x - 2x) /24 = x/24
In the x/12 profit is Tk.x/24
In the 1 profit is Tk ( x × 12) /( 24 ×x)
In the 100 profit is Tk =( x × 12 ×100)/ ( 24 × x) = 50
60
30
10
130
1/3
1/5
2/5
3/5
6
8
9
11
1 : 2
2 : 5
3 : 5
2 : 3
55
60
65
75
45
40
55
50
প্রশ্নঃ A book sells for Tk. 65. This price gives the seller a profit of 30%. what will be the new selling price (in Tk) if he cuts the profit to 10%?
বর্ণনাঃ
Let cost = x
x + x× 30% = 65
1.3x = 65
x = 65 × 10 / 13
x = 50
New profit = 50 × 10% = 5
New selling price = 50 + 5 = 55
140
160
220
240
প্রশ্নঃ A parking garage rents parking spaces for Tk. 10 per week or Tk 30 per month. How much does a person save (in Tk) in a year by renting for a month than for a week?
বর্ণনাঃ
In week, total cost = 52 × 10 = 520
In month , total cost = 30 ×12 = 360
(-) total = 160
261
216
1944
1494
283.33
300
350
375
প্রশ্নঃ Kalam, Salam and Rahim took lunch together. Meal of Rahim costs 50% more than that of Salam and the meal of Kalam costs 5/6th of that of Rahim. Salam paid Tk 100 for his meal. What was the total bill (in Tk) paid by the three persons?
বর্ণনাঃ
Salam paid Tk. 100
Rahim paid ( 100 + 100 × 50%) = 150
Kalam paid = 150 × 5/6 = 125
Total = ( 100 + 150 + 125) = 375
5/12
4/5
5/4
5/3
1
2
3
4
first
late
delivered by a lady
meaningful
satisfied
austere
simple
unhappy
if
lest
because
nor
am
is
was
were
in
over
by
along
of
for
by
to
give off
give from
give in
give out
many
regular
further
repeated
on
of
for
to
fell down
got angry
suddenly stopped
left the place
বিষয়ভিত্তিক সমাধান
প্রতিষ্ঠানভিত্তিক সমাধান
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