Question

A boat, whose speed in still water is 25% more than the

Q: Answer-A boat, whose speed in still water is 25% more than the speed of the current, covers 315 km downstre...

Let, the speed of the current be x kmhr Therefore, speed of the boat in still water 1.25x kmhr Downstream speed of the boat x 1.25x 2.25x kmhr For I 2.25x 31520 gt 2.25x 15.75 gt x 7 Therefore, speed of boat in still water 1.25x 8.75 kmhr Therefore, I is false. For II 2.25x 31510 gt 2.25x 31.5 gt x 14 Therefore, speed of boat in still water 1.25x 17.5 kmhr Therefore, II is true. For III 2.25x 31514 gt 2.25x 22.5 gt x 10 Therefore, speed of the boat in still water 1.25x 12.5 kmhr Therefore, III is true.

speed of the current, covers 315 km downstream in _____ hours. The speed of the boat in still water is ______ km. The values given in which of the following options will fill the blanks in the same order in which is it given to make the statement true: I. 20, 8 II. 10, 17.5 III. 14, 12.5

A only I and II

B only II and III

C only I

D All are true

E only III

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