The line graph below shown the amount of rain collected in a town from January to June How many percent more rain was collected in January than in March?

A

40%

B

50%

C

60%

D

65%

E

None of the above

Sorry. Please check the correct answer below.

50% $\rightarrow$ January $\rightarrow$ 255, March $\rightarrow$ 170, 255-170 = 85, $\frac{85}{170}$ = 50%

Alan took part in a 100m freestyle swimming race. His performance was shown in the line graph below. What was his average speed for the whole swimming race?

A tank was completely filled with water. The water was drained out of the tank at a constant rate for 25 minutes. The graph below shows the volume of water in the tank over a period of minutes. (a) what fraction of the tank was filled with water at the end of 25 minutes? Express your answer in the simplest form. How many liters of water was drained out of the tank in 1 minute?

Water was leaking from a tank in a water company. The line graph below shows the amount of water in the tank over a period of 8 hours. Given that the company had to pay a fine of \$12 for every 4 liters of water leaked, how much fine did the water company pay from 8 am to 4 pm?

The graph below shows the length of two springs when an object was hung on each spring. Find the length of each spring that was stretched for every 10g of the objects.

A

A: 0.7cm B: 0.4cm

B

A: 0.8cm B: 0.5cm

C

A: 0.9cm B: 0.6cm

D

A: 0.10cm B: 0.7cm

E

None of the above

Sorry. Please check the correct answer below.

Spring A: 0.9cm. Spring B: 0.6cm $\rightarrow$ A 220g $\rightarrow$ 20cm – 2cm = 18cm, divide by 20 = A 10g $\rightarrow$ 0.9cm, divided by 30 $\rightarrow$ B 300g $\rightarrow$ 20cm – 2cm = 10cm, B 10g $\rightarrow$ 0.6cm

Spring A: 0.9cm. Spring B: 0.6cm $\rightarrow$ A 220g $\rightarrow$ 20cm – 2cm = 18cm, divide by 20 = A 10g $\rightarrow$ 0.9cm, divided by 30 $\rightarrow$ B 300g $\rightarrow$ 20cm – 2cm = 10cm, B 10g $\rightarrow$ 0.6cm

The line graph shows the volume of water in a tank from 11 am to 3pm. The tank was completely filled with water at 12pm. Water was then allowed to flow out of the tank. At what timE was there only 50% of water left in the tank?

A

1pm

B

2pm

C

3pm

D

4pm

E

None of the above

Sorry. Please check the correct answer below.

100% of water is at 10pm 50% of water = $\frac{50}{100} \times 120L = 60L$ Time at which water is left 60L = 2pm

100% of water is at 10pm 50% of water = $\frac{50}{100} \times 120L = 60L$ Time at which water is left 60L = 2pm

The line graph below shown the number of visitors in a shopping mall from February to June. What is the increase in the number of visitors from April to June?

The line graph below shows the average waiting time from 2008 to 2012 for the patients at the emergency department of a hospital. (a) What was the difference between the longest waiting time and the shortest waiting time during the period from 2008 to 2012? (b) Find the percentage increase in waiting time for a patient between 2009 and 2010. Give your answer correct to 1 decimal place.