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Halim purchased brand A pen for Taka 200 each and brand B per for Taka 100 each. If he purchased a total of 8 of these pens for Taka 1,200 how many pens of brand A did he purchased ?

Correct Answer: 4
ধরি, A brand এর কলম সংখ্যা x টি B brand এর কলম সংখ্যা ( 8 - x) টি 200x + ( 8 - x) × 100 = 1200 200x + 800 - 100x = 1200 100x = 1200 - 800 x = 400/100 x = 4

At a stationary shop, it costs Tk. 185 for 4 gel-pen, 8 ball -point pens and 1 marker pen and Tk. 315 for 7 gel-pens, 15 ball point pens and 1 marker pen. What would be the cost of 1 gel-pen, 1 ball -point pen and 1 marker pen?

Maria Purchased brand X pens for Tk. 4.00 apiece and brand Y pens for Tk. 2.80 apiece. If Maria purchased a total of 12 of those pens for Tk. 42.00 ,how many brand x pens did she purchase?

Maria purchased brand X pens for TK. 4.00 a piece and brand Y pens for TK. 2.80 a piece. If Maria purchased a total of 12 of those pens for TK. 42.00, how many brand X pens did she purchase ?

A pen company produces very fine quality of writing pens. Company knows that on average 10% of the produced pens are always defective so are rejected before packing. Company promises to deliver 7200 pens to its wholesaler at Rs. 10 each. It estimates the overall profit on all the manufactured pens to be 25%. What is the manufactured cost of each pen?

In a box, there are 5 black pens, 3 white pens and 4 red pens. In how manyways can 2 black pens, 2 white pens and 2 red pens can be chosen?

A man purchased equal number of banans at two different rates one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that , he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?

Arif bought 17 pens of three colors black , green and red. They cost Tk 5,Tk 10 and Tk 25 each respectively . The total amount that Arif paid was Th 205. If Arif bought twice as many green pens as red pens ,how many black pens did buy ?

X purchased some pens for TK. 120 . If the price per piece of pen was TK. 3 less, he would have received 2 more pens. How many pens did he purchase ?

A trader purchased some pens for Tk. 150. If the price of each pen was Tk. 5 less, he would have got 5 more pens. How many pens did he buy?

A trader bought 100 identical pens at a total cost of TK. x . If he sold each pen at 50% above the original cost per pen, then, in terms of x , what was the selling price of each pen?