A) 3.9
B) 39
C) 34.45
D) 50
Correct Answer: D
Solution :
\[?=\frac{6.5\times 4.7+6.5\times 5.3}{1.3\times 7.9-1.3\times 6.9}\] \[=\frac{65\times 47+65\times 53}{13\times 79-13\times 69}\] \[=\frac{65\times (47+53)}{13\times (79-69)}\] \[=\frac{5\times 100}{10}=50\]You need to login to perform this action.
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