Level 2
A bag of marbles weighs 45 kg.
A bag of beads weighs 110 kg less than the bag of marbles.
Find the total mass of the bag of marbles and the bag of beads.
Level 2 PSLE
Some pupils are arranged in 4 rows. Each row has s more pupils than the row in front of it. There are 8s pupils in the second row. How many pupils are there altogether? Give your answer in terms of s in the simplest form.