Level 3 PSLE
Two rectangular tanks are shown. At first, Tank X was empty and one quarter of Tank Y was filled with water. Both taps were turned on at the same time and water from both taps flowed at the same rate of 1.6 litres per minute. How much time will it take for the height of the water to be the same in both tanks? (1 litre = 1000 cm3 )
Level 3 PSLE
Two rectangular tanks are shown. At first, Tank X was empty and one quarter of Tank Y was filled with water. Both taps were turned on at the same time and water from both taps flowed at the same rate of 1.6 litres per minute. How much time will it take for the height of the water to be the same in both tanks? (1 litre = 1000 cm3 )
Level 3
Xinyi had some 20-cent and 50-cent coins which added up to $20.30. She had 14 more 20-cent coins than 50-cent coins. How many 20-cent coins did she have?
Level 3
A puppy is 5220 g heavier than a cat. The total mass of the 2 animals is 11 kg. What is the mass of the puppy?
(Give the answer in kilograms and grams.)
Level 3
During a candy sale, Sally paid $2 less for every 15 candies she bought. Each candy cost 60 cents. Sally paid a total of $38 for some candies. How many candies did she buy?
Level 3
There were some flights of steps with the same amount of steps. For the 1st staircase, Carl walked up some steps and ran up 7 steps. He took 98 seconds. For the next staircase, he ran up 15 steps and walked the rest of the steps, and took a total of 58 seconds. How long would Carl take to walk up 4 flights of steps of the same number of steps? Express the answer in min and s.
Level 3
Justin and Wesley each had the same volume of water. The water was used to pour into identical bottles. Justin filled up 16 bottles and had 4.8 ℓ of water left. Wesley filled up 8 bottles and had 6.4 ℓ of water left.
What was the capacity of each bottle? Give your answer in millilitres.
What was the total volume of water Justin and Wesley had at first? Give your answer in litres.
Level 3
Oscar Mobile Company has a few mobile phone service plans. Plan A offers 270 SMS and 90 minutes of talk time for $25.20. Plan B offers 370 SMS and 190 minutes of talk time for $35.20. Oscar Mobile Company is also going to launch Plan C which offers 170 SMS and 260 minutes of talk time. How much should Oscar Mobile Company charge for Plan C if the cost per SMS and the cost per minute of talk time do not vary across the three plans?
Level 3
Min saved two coins every day from Monday to Sunday by putting them into a glass jar. Each coin was either a 5¢ or 20¢ coin. The total value of the coins at the end of 5 weeks was $11.00. How many of the coins were 20¢ coins?
Level 3
Jim started saving part of his pocket money by putting 2 coins in a money box every day. Each coin was either a 20¢ or 50¢ coin. His mother also put on a $1 coin in the box every 7 days. The total value of the coins after 98 days was $82.30.
