Subject
পেট্রোবাংলা
Topic
বাংলাদেশ গ্যাস ফিল্ড লিমিটেড (সহ: ব্যবস্থাপক) -০৩.১২.২০২১
A cement mixture is composed of 3 elements. By weight, 1/3 of the mixture is sand, 3/5 is water and the remaining 12 pounds of the mixture is gravel. What is the weight of the entire mixture in pounds?
A cement mixture is composed of 3 elements. By weight, 1/3 of the mixture is sand, 3/5 is water and the remaining 12 pounds of the mixture is gravel. What is the weight of the entire mixture in pounds?
ক)
60খ)
80গ)
90ঘ)
180ঙ)
None of theseExplanation
মোট মিশ্রণের পরিমাণ = x মিশ্রণে sand এর পরিমাণ = x/3 মিশ্রণে water এর পরিমাণ = 3x/5 এখন (x/3) + (3x/5) + 12 = x ⇒ 12 = x - (x/3) - (3x/5) ⇒ 12 = (15x - 5x - 9x)/15 ⇒ 12 = x/15 ⇒ x = 12 × 15 ∴ x = 180Related questions
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