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In each equation decide which one of the...

In each equation decide which one of the following five equations under each would be correct by interchanging the signs and number as given.
`xx` and +, 40 and 12`

A

`(95 + 40 ) div 30 = 45`

B

`(8 + 40) - 12 = 54`

C

`(12 xx 60) + 5 = 105`

D

`( 40 xx 10) - 12 =- 18`

Text Solution

Verified by Experts

The correct Answer is:
D
Interchanging symbols `.xx. and .+.,` number .40. and .12. in option (d) statement, we have the new equation as :
`(12 +10) - 40 = - 18`
Using BODMAS RULE, we get
`22- 40 =- 18`
or, ` -18 =-18,` which is correct.
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LUCENT PUBLICATION-MATHEMATICAL OPERATIONS -EXERCISE-3
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