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Find x, if 30% of 400 + x% of 70 = 25% o...

Find x, if 30% of 400 + x% of 70 = 25% of 536.
x ज्ञात कीजिए, यदि 70 के 400+x% का 30% = 536 का 25% है।

A

a) 20

B

b) 30

C

c)10

D

d) 40

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