There are 87 balls in a jar. Each ball is painted with at least one of two colors, red or green. It is observed that 2/7 of the balls that have red color also have green color, while 3/7 of the balls that have green color also have red color. what fraction of the balls in the jar has both red and green colors?
Created: 6 years ago |
Updated: 3 years ago
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এখানে একটি Jar এ 87 টি বল আছে। প্রতিটি বলে red অথবা green এই দুটি color - এর অন্তত একটি পাওয়া যাবে। আবার red color বলের অংশে green color ও আছে। 7 টি বলে 2 টি বল Boty color মানে (Red + Green)।বের করতে হবে মোট বলের কত অংশ red এবং green উভয় color আছে?
ধরি, উভয় এর সংখ্যা
উভয় color বল x হলে red color বল হবে টি
" " " " " green " " "
Total = Red + green - both
Md Azizur Rahman
Founder of Satt
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