Question 20

If ÷ means +, + means x, x means - and - means ÷, then what is the value of :
[(1440 - 36 x 16) + 15] + 5 ÷ (144-12) + 25 = ?

Solution

Expression : [(1440 - 36 x 16) + 15] + 5 ÷ (144-12) + 25 = ?

$$\equiv[(1440\div36-16)\times15]\times5+(144\div12)\times25$$

= $$[(40-16)\times15]\times5+(12\times25)$$

= $$(360\times5)+300$$

= $$1800+300=2100$$

=> Ans - (B)

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