number puzzle

[bobobalde111]

my trip to the supermarket took exactly one hour

i drove at a steady speed of 84 kilometres an hour to the supermarket where i stayed for 16 minutes

i drove home at 70km per hour

how far is it to the supermarket

[jan1956]

not sure, but you didn't buy much in 16 minutes are you sure you didn't forget anything? Bread, rice Toilet rolls, suncream? It,s far too nice a day to worry about how far the supermarket is? just chill bob.

[Clayhead]

28 km.

The first journey would take 20 minutes.

The return would take 24 minutes.

Plus a 16 min. stay = 1 hour.

[crofter]

Morning bob, I make it 28 kilometres.

He takes 20 minutes to drive there and 24 to drive back!The time-honoured equation D = RT, when R = 84 kph and T = 20/60 hours gives D = 28 (kilometres)

[mohill]

28km

There: 28 divided by 84 = 1 third of an hour = 20min

Home: 28 divided by 70 = 2 fifths of an hour = 24min

20 + 16 + 24 = 60min = 1hour for the whole trip

[mohill]

Sorry crofter and clayhead. In the time it took me to work it out and then check it , you both had put in your solutions.

[Dsg]

You could argue that it is 84 kilometres to the supermarket !!

[bobobalde111]

many thanks to all

where are you julie fer

i hope all is well