Ratio/rates Flashcards
What is 1.5 g/mL expressed in g/L
1L = 1000mL
1.5 g/L x 1000 = 1500 g/L
A 250 mL bottle of cough mixture contains 21.6 g/40mL of sorbitol
How much sorbitol is in the bottle?
21.6g/40mL = 0.54g/mL
Amount of sorbitol = 250 x 0.54 = 135g
A trout farmer took 600 trout from his dam, tagged and returned them. When a sample of 120 was captured a few days later 35 were tagged.
How many trout are in the dam
600 35
—— = —— P = 120
P 120 —— X 600
35
P 120
—— = —— Trout = 2057
600 35
1mm3 = mL
1cm3 = mL
1m3 = L
1mm3 = 0.001mL
1cm3 = 1mL
1m3 = 1000L
Fuel consumption for a vehicle that travelled 340km using 51 Litres of petrol
Fuel consumption = Fuel (L)
———————
Distance (km)
Fuel consumption = 51 x 100
———————
340
Fuel consumption = 15L / 100km
The scale on a map is given as 1cm = 5km. If the distance between two points on the map is 46mm, what is the actual distance between these points (km)
Actual distance = 46mm / 10
= 4.6 cm x 5
= 23 km
There are 384 passengers and 144 crew in a cruise ship. If there are 22 lifeboats, enough for everyone, how many are allotted to the passengers, and how many to the crew?
384 : 144 = 8 : 3 8 part = 8 x 2
11part = 22 = 16 boats
1 part = 22 crew 3 part = 2 x 3
----- = 6 boats
11
= 2
WIR = ?
B.I.W = ?
W.C = ?
Dw =?
WIR = Walk in robe
B.I.W = Built in wardrobe
W.C = Water Closest (toilet)
Dw = Dishwasher
Simplify 1.70 : 0.03
170 : 3
1W = ? J
1KJ = ? Kw
1W = 1J per second
1KJ = 1Kw
1Kwh = ? MJ
1Kwh = 3.6 MJ
MHR =
THR =
MHR = 220 - Age in years
THR = is between 65% and 85%
D =
S =
T =
D = S x T
S = D / T
T = D / S
Determine the scale for the photo of a 50m pool given the length of the pool is 5cm
5cm : 50m
5cm : 5000cm
1 : 1000
Scale = drawing length = actual length
True
In a tropical drink , the ratio is pineapple to mango to orange 15:9:4
How much orange juice is need if there is 3L of pineapple juice?
Pineapple = 15 part = 3L
4 part Orange = 3
— x 4
15
Orange = 0.8L or 800mL
10 : 15 : 30
= 10 : 15 : 30
— — —
55 55 55
= 2 : 3 : 6
How do you find Sin 0
Sin-1(O)
—
H
How many kilojoules are in 1KWh
1KJ = 1 second
1 KWh = 1 x 60 x 60
= 3600 kJ
Issy and Patrick share a pizza in a ratio of 1 : 8 what fraction of the pizza does Patrick get?
Patrick part = 8
—
9
A group of preschoolers contains 63 boys and 27 girls. What is the ratio of boys to all children
Ratio = 7 : 10
The ratio of flour to sugar is 5 : 3, and the ratio of sugar to butter is 4 : 1
What is the ratio of flour to butter?
F : S : B
5 : 3
4 : 1
F = 5 x 4
S = 1 x 3
20 : 3
A room is 20m long and measures as 9cm what is a approximate ratio
9cm : 20m = 9cm: 2000cm
Ratio = 9 : 2000
= 1 : 222
What does PWDR stand for
Powder room
