chapter 1;rates Flashcards
1
Q
rates
5520m/h to m/min
A
55200=55200m divide by 1h
55200m divide by 1 times 60min
=920m/min
2
Q
rates
$6.50/kg to c/g
A
6.50=$6.50 divide by 1kg
6.50 times 100c divide by 1 times 1000g
=0.65c/g
3
Q
the unitary method eg.
a car travels 360km on 30L of petrol. how far does it travel on 7L?
A
30L=360km
1L=36km0 divide by 30
7L=360km divide by 30 times 7km
=84km
4
Q
speed formula
A
speed= D/T
5
Q
time formula
A
time=D/T
6
Q
distance formula
A
distance=S X T
7
Q
distance time graphs
gradient=
A
rise/run = D/T=S
8
Q
fuel consumption rate
A
amount of fuel(L) times 100km divide by distance travelled(km)
9
Q
heart rate
A
MHR=220-age(years)
