mary won £5000 in a competition .she used the money to pay for herself and 8 friends to go on a holiday. Flights cost £279 for each of them. Accommodation costs £184 for each of them. how much of the £5000 did she have left after paying for flights and accommodation for herself and the 8 friends

the answer is £833

Step-by-step explanation:

Mary have £5000.

8 friends + Mary = 9 people

flight = £279 × 9

= £2511

accomodation = £184 × 9

= £1656

flight + accomodation = £4167

£5000 - £4167

= £833

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

i believe the answer is d.

hope it you! : d