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Question:
300 grams of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?
a)
40 grams
b)
60 grams
c)
80 grams
d)
90 grams
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Description:

ধরি, x গ্রাম চিনি যোগ করতে হবে।

( 300 এর 40%) + x = ( 300 + x) এর 50%

300 ×( 400/100) + x = 300 + x × (50/100)

120 + x = 300 + x /2

2x + 240 = 300 + x

2x - x = 300 - 240

x = 60

This question was added in the model test of SO (2022)

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Coaching/Teacher: Sayem
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