simple interest formular
S.I = p x r x t/100
where p is the principal
r is the rate
t is the time
so,
p = 960.95
r = 4.5
t = not given
I = 302.70
so making t subject of formula from the main formula
t = I x 100/p x r
t = 302.70 x 100/960.95 x 4.5
t = 30270/4324.275
t = 6.99
t = 7years to the nearest whole number
