Level 3
When an ice box is packed with 25 identical bottles of soda, it has a mass of 18.4 kg. When the ice box is packed with 30 identical packets of milo, it has a mass of 7.5 kg. A bottle of soda weighs 470 g more than a packet of milo. What is the mass of the empty ice box in kg?
Level 3
Two different brands of detergent powder are on promotion in a supermarket. Ms Ong wants to buy 30 kg of detergent. How much will she save if she buys Brand B detergent powder instead of Brand A?
Level 3
Two different brands of detergent powder are on promotion in a supermarket. Ms Ong wants to buy 30 kg of detergent. How much will she save if she buys Brand B detergent powder instead of Brand A?
Level 3
One eating house bought 168 kg of beef and mutton. 13 of the beef and 45 of the mutton were sold. The amount of mutton sold was 12 kg more than the amount of beef sold.
Level 3
Fion used 47 of the flour to bake a cake. She used 14 of the remaining flour to bake some muffins. Given that Fion was left with 450 g of flour, how much flour did she have at first?
Level 3
Serena used 25 of the flour and an additional 50 g to bake some cake. She used 14 of the remaining flour to bake some muffins. Given that Serena was left with 156 g of flour, how much flour did she have at first?
