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# [Smart Math] Arithmetic Problem 16

Here’s and example of a SMART MATH problem for ARITHMETIC.

### Problem

$\frac{6.5\times 4.7+6.5\times 5.3}{1.3\times 7.9-1.3\times 6.9}=?$

1. 2
2. 5
3. 13
4. 39
5. 50

### The Usual Method

$\frac{6.5\times 4.7+6.5\times 5.3}{1.3\times 7.9-1.3\times 6.9}=\frac{6.5(4.7+5.3)}{1.3(7.9-6.9)}$

$=5\times \frac{10}{1}=50$

(Ans: 5)

Estimated Time to arrive at the answer = 30 seconds.