A train fare costs £23.55
All train fares are increased by 2.8%

Work out the new fare.
[2 marks]



Answer.......



4 A savings account pays 3.6% per annum simple interest.
Heidi puts £400 into the account.

How much will she have in the account after 5 years?
[2 marks]



Answer .............


5 In one week the mass of a puppy increases from 1.8 kg to 2.25 kg

Work out the percentage increase of the mass.
[2 marks]




Answer............

Respuesta :

1)
23.55+23.55×0.028
=24.21

2)
The formula is
A=p (1+rt)
A future value?
P present value 400
R interest rate 0.036
T time 5years
A=400×(1+0.036×5)
A=472

3)
((2.25−1.8)÷1.8)×100=25%

Hope it helps!