Instructions

What will come in place of the question mark (?) in the given questions ?

Question 107

$$(\frac{1\frac{7}{60}}{1\frac{27}{40}})\times(1\frac{29}{34})\times? = 231$$

Solution

Expression : $$(\frac{1\frac{7}{60}}{1\frac{27}{40}})\times(1\frac{29}{34})\times? = 231$$

=> $$\frac{\frac{67}{60}}{\frac{67}{40}} \times (\frac{63}{34}) \times x = 231$$

=> $$\frac{40}{60} \times (\frac{63}{34}) \times x = 231$$

=> $$\frac{2}{3} \times (\frac{63}{34}) \times x = 231$$

=> $$\frac{21}{17} \times x = 231$$

=> $$x = 231 \times \frac{17}{21}$$

=> $$x = 11 \times 17 = 187$$


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