Question

L
Formulate the following problems as a pair of equations and then find their solutions.
A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can
go 40 km-upstream and 55 km downstream. Determine the speed of the stream and
that of the boat in still water.​

Answer 1

Step-by-step explanation:

30(x-y) 44(X+y) =10

40(x-y) 55(X+y) =13

30x-30y +44x+44y =10

74x +14y =10 first equation

40x-40y +55x+55y =13

95x +15y =13 second equation

Answer 2

Answer:

Speed of boat in still water is 8 km per hour

Speed of stream in still water is 3 km per hour

Step-by-step explanation:

Please refer to the attachment for step by step explanation. Hope it helps you.