Darcy uses place value blocks to show a number. she uses 4 thousands blocks and 5 hundreds blocks. what's the number? how can she use place value blocks to show the number another way?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.