A trader purchases blue paint and yellow paint at a price of Tk. 110 and Tk. 100 per liter respectively . He mixes blue and yellow paint at a ratio of 1:21 to make a certain paint of green color. He sells the green pair at a price of Tk. 120 per liter. If the trader makes a profit of Tk. 2000, how much yellow paint (in kg) did he use in the mixture?

Created: 4 weeks ago | Updated: 3 weeks ago

Job Solution Dutch-Bangla Bank Ltd Dutch – Bangla Bank Ltd Recruitment Test for Probationary Officer Examination Held On : 18.08.2017 || 2017 গণিত

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$H e r e, b l u e p a i n t a n d y e l l o w p a i n t r a t i o i s 1 : 2 L e t' x' i s t h e u s a g e o f p e r k g p a i n t w h i c h i s g e n e r a l t e r m o f t h e r a t i o B l u e p a i n t = 1 \times x k g Y e l l o w p a i n t = 2 \times x k g A c c o r d i n g t o t h e q u e s t i o n, 3 x \times 120 - (110 \times x + 100 \times 2 x) = 2, 000 \Rightarrow 360 x - 310 x = 2, 000 \Rightarrow 50 x = 2, 000 ∴ x = 40 Y e l l o w p a i n t u s a g e = 2 \times 40 = 80 k g a n s .$

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