If the average of a and b is 45, and the average of b and c is 35 then (a-c)=?
Created: 6 years ago |
Updated: 3 years ago
best des
এখানে, a + b = 45×2 = 90 - - - - - - - (1)
এবং b + c = 35×2 = 70 - - - - - - - - (2)
(1) - (2) হতে পাই (a + b - b - c) = 90 - 70
⸫ a - c = 20
Md Azizur Rahman
Founder of Satt
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