Two numbers are in the ratio of 3 : 5. If each is increased by 10, the ratio becomes 5 : 7. The numbers are :

Created: 8 years ago | Updated: 1 year ago

Updated: 1 year ago

ক

3, 5
খ

12, 20
গ

15, 25
ঘ

30, 42

617

ব্যাখ্যাঃ

Let the ratio of the numbers be 3x and 5x .

If each number is increased by 10 .

then ,

(3x + 10)/(5x + 10) = 5/7

or, 21x + 70 = 25x + 50

or, 21x - 25x = 50 - 70

or, - 4x = - 20

or, x = 5 .

so, Numbers are 15 and 25

Azizar Rahman Aziz

8 years ago

MCQ: 36 CQ: 15

Practice

ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল

ত্রিভুজের তিন বাহু দেওয়া আছে :

মনে করি, △ABC এর BC = a, CA = b এবং AB = c । এর পরিসীমা 2s = a + b + c l AD ⊥ BC আঁকি।

ধরি, BD = x তাহলে, CD = a - x

△ABD এবং △ACD সমকোণী।

আবার,

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শিক্ষকদের জন্য বিশেষভাবে তৈরি

১ ক্লিকে প্রশ্ন, শীট, সাজেশন ও
অনলাইন পরীক্ষা তৈরির সফটওয়্যার!

শুধু প্রশ্ন সিলেক্ট করুন — প্রশ্নপত্র অটোমেটিক তৈরি!

প্রশ্ন এডিট করা যাবে

জলছাপ দেয়া যাবে

ঠিকানা যুক্ত করা যাবে

Logo, Motto যুক্ত হবে

অটো প্রতিষ্ঠানের নাম

অটো সময়, পূর্ণমান

প্রশ্ন এডিট করা যাবে

জলছাপ দেয়া যাবে

ঠিকানা যুক্ত করা যাবে

Logo, Motto যুক্ত হবে

অটো প্রতিষ্ঠানের নাম

অটো সময়, পূর্ণমান

অটো নির্দেশনা (এডিটযোগ্য)

অটো বিষয় ও অধ্যায়

OMR সংযুক্ত করা যাবে

ফন্ট, কলাম, ডিভাইডার

প্রশ্ন/অপশন স্টাইল পরিবর্তন

সেট কোড, বিষয় কোড

অটো নির্দেশনা (এডিটযোগ্য)

অটো বিষয় ও অধ্যায়

OMR সংযুক্ত করা যাবে

ফন্ট, কলাম, ডিভাইডার

প্রশ্ন/অপশন স্টাইল পরিবর্তন

সেট কোড, বিষয় কোড

এখনই শুরু করুন ডেমো দেখুন

৫০,০০০+

শিক্ষক

৩০ লক্ষ+

প্রশ্নপত্র

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Two numbers are in the ratio of 3 : 5. If each is increased by 10, the ratio becomes 5 : 7. The numbers are :

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