Question

Ramlal, a student of class - X goes to Ganga River with his father. When he saw a boat in the river, he wants

to sit in it, So his father gets ready to sit with him. Ramlal is sitting in a boat which goes upstream at a speed

of 6 km/h and downstream at a speed of 14 km/h. When Ramlal is in the boat, some questions arise in his

mind. Answer the following questions -

a) Find the speed (in km/h) of the boat in still water -

i) 8 ii) 10 iii) 12 iv) 14

b) Find the speed (in km/h) of stream -

i) 3 ii) 4 iii) 5 iv) 6

c) Which mathematical concept is used in above problem?

i) Pair of linear equations ii) Cross-multiplication method

iii) Factorisation method iv) None of the above

d) Write the direction in which the speed is maximum.

i) Upstream ii) Downstream

iii) Both have equal speed iv) None of the above

e) Find the average speed of stream and boat in still water.

i) 7 km/h ii) 10 km/h iii) 12 km/h iv) 5 km/h​

Answer 1

Answer:

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