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Some equations are solved on the basis o...

Some equations are solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.
`5xx4xx3=70`,
`6xx5xx4=140`
`7xx6xx5=?`

A

210

B

220

C

230

D

240

Text Solution

Verified by Experts

The correct Answer is:
D
`5xx4xx3=70`
`implies5xx4xx3+10=70`
`6xx5xx4=140`
`implies6xx5xx4+20=140`
Therefore,
`?=7xx6xx5+30`
`implies?=210+30=240`
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