Subject
Bank Exam
Topic
Southeast Bank Ltd. - Probationary Officer - 2017
During a certain season, a team won 80% of its first 100 games and 50% of its remaining games. If the team won 70% of its games for the entire season, what was the total number of games that the team played ?
During a certain season, a team won 80% of its first 100 games and 50% of its remaining games. If the team won 70% of its games for the entire season, what was the total number of games that the team played ?
ক)
180খ)
170গ)
156ঘ)
150Explanation
Solution: অনুবাদঃ একটি দল 100 টি ম্যাচের মধ্যে 80% খেলায় জিতল এবং বাকি ম্যাচগুলোর মধ্যে মোট 50% খেলায় জিতল । দলটি যদি পুরো বর্ষ জুড়ে 70% ম্যাচে জিতে,তবে দলটি মোট কতটি খেলায় অংশগ্রহণ করেছিল ? মনে করি, Total game খেলেছিল x টি Game win করেছে = (x 70%) = 7x/10 টি প্রশ্নমতে, (100 80%) + ( x - 100) 50% = 7x/10 => 80 + (x - 100) => => 14x = 1,600 + 10x - 1,000 => 14x = 600 x = 150 Exam Shortcut : শেষ উত্তর অপশন থেকে নিচের মতো Back solve করতে হবে 80% of first 100 games 50% of remaining games 70% of for the entire season 80 (150 - 100) 50% = 25 150 70% = 105 i.e (80 + 25)Related questions
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