Question

Q.1 Isabel drives from Geneva to Rome, a distance of 930 km. Her average speed is x km/h. a)Write down an expression, in terms of stor the time, in hours, the journey takes.
b)She returns from Rome to Geneva alongithalsame countelat an average speed of (x + 5) km h. The journey takes-hour less than the journey from Geneva to Rome. (i) Write down an equation, in terms of x. and show that it simplifies to + 5x - 9300 = 0,​

Answer 1

Answer:

60

Step-by-step explanation:

ashu takes one work to do in 12 days

Pranab takes same work in 10 days

so we will find how many days will ramu finish his same work=x

together three work in 5 days

then ramu =x/5

ashu= 1/12

pranav=1/10

together =x/5+1/12+1/10=1 work

so we must add =5/x+11/60=1

60 =5/x

60 day