In this estimation, question gives your answers to one significant figure.

Question

A) If a cash point dispenses a £10 note every second, how long would it take to dispense a
trillion pounds?

B) An aircraft carries 47 tonnes of cargo. If each banknote has a mass of 1g, what is the maximum value of £10 notes that fit into the plane?

Answer 1

So where is your attempt to do the problems?

Answer 2

my answer for question A was:

1*10^11 seconds which is 3000 years to 1 SF
is that correct? and I'm trying to solve question B

Answer 3

for part B I have got that the maximum value of £10 is 4700, by using the formula p=m/v
is that right? please help