You have a $10 top-up card for your mobile phone. If you have used $6 of your credit, what is the ratio between what you have sp
ent and what you have left in credit? A) 10:6
B) 3:2
C) 4:6
If 10 minutes talk-time costs $2, how much will 7 minutes cost?
A) $1.40
B) $1.04
C) $1.34
You use a mobile phone to send a text message with 160 characters, and receive a reply of 40 characters. What is the simplest ratio between the number of characters in the two messages?
A) 160:40
B) 16:4
C) 4:1
A survey shows that on average students spend 9 hours a week in chat rooms, and 3 hours e-mailing. What is the ratio between the two?
A) 9:3
B) 3:1
C) 1:3
If you play 3 games of snooker and it costs you $6, would it cost you $16 for 8 games?
A) Yes
B)No
While you're playing snooker you achieve a maximum break of 147. Your friend's highest break is 49. What is the ratio between the breaks?
A) 147:49
B) 3:1
C) 1:3
The snooker hall has given you a $40 prize for your 147 break. You decide to share it with your friend in the ratio 3:1. How much will you give your friend?
A) $10
B) $11
C) $9
Your friend spends 10 hours a week swimming and 5 hours a week weight training. Choose the simplest way of writing this as a ratio of swimming to weight training.
A) 10:5
B) 5:1
C) 2:1
Sessions in the swimming pool cost $10 for 5, how much will it be for 20 sessions?
A) $30
B) $20
C) $40
A swimming pool is 20m wide and 50m long. What is the simplest ratio of the pool's width to its length?
In the function the .72 means that each unit of time 72% of the value is retained. This means that 28% percent of the value is lost or decays because 1-0.72=0.28 or 28 percent.
