Then, his rate downstream = 2x kmph.
∴ (Speed in still water) : (Speed of stream) = | ❨ | 2x + x | ❩ | : | ❨ | 2x - x | ❩ |
2 | 2 |
= | 3x | : | x |
2 | 2 |
= 3 : 1.
U ? A = {a, b, c, d, e, f} ? {a, b, c} = {a, b, c, d, e, f} = U
(U ? A)? = ?.
Sunil's income is less than Mukul's = [(10 / (100 + 10)] × 100 %
= ( 1000 / 110 )%
= 9.09 %
So, 39 is wrong.
So, 33 is wrong. It must be 35
∴ x = 7.
So, 40 is wrong.
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