alleryদুটি দড়ির দৈর্ঘ্যের অনুপাত 5 : 8 এবং দীর্ঘতর দড়িটি ক্ষুদ্রতর দড়িটির চেয়ে 18 m বেশি। ক্ষুদ্রতর দড়িটির দৈর্ঘ্য হলো
A48 m
B30 m
C36 m
D40 m
Answer & Solution
Correct answer: B. 30 m
তিন ভাগ সমান 18 m, সুতরাং এক ভাগ হলো 6 m এবং ক্ষুদ্রতর দড়িটি হলো 5 x 6 = 30 m।
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