Level 3
Andy has 20-cent coins and 50-cent coins.
The total value of all his coins is $24.
He has 6 less 20-cent coins than 50-cent coins.
How many coins does he have altogether?
Level 3
Vincent has 5 more 50-cent coins than 10-cent coins. After he used 6 of his 50-cent coins, the total value of 50-cent coins is $1.50 more than the total value of 10-cent coins. How many coins did he have at first?
Level 3
The mass of 8 exercise books and 3 guide books is 3.7 kg. The mass of 2 exercise books and 7 guide books is 5.3 kg. Find the mass of each guide book.
Level 3
There are 151 marbles in a big basket and a small basket altogether. The total number of marbles in 3 big baskets and 8 small baskets is 568. How many more marbles are there in a big basket than a small basket?
Level 3
Betty spent $37.80 on an equal number of spoons and plates. If 5 spoons cost $7.20 more than 2 plates while 1 spoon cost as much as 2 plates, how many spoons and plates did she buy?
Level 3
Container E contains only 50-cent coins and Container F contains only 5-cent coins. There are 19 more coins in Container F than in Container E. The amount of money in Container E is $1.75 more than the amount of money in Container F. Find the total amount of money in both containers.
