Question
There are a total of 290 pieces of 5-cent coins, 10-cent coins and 50-cent coins in John's coin box. 35 of these coins are 5-cent coins. The number of 50-cent coins is thrice the number of 10-cent coins.
  1. How many 50-cent coins are there?
  2. What is the total value of the 50-cent coins in John's coin box?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

There are a total of 290 pieces of 5-cent coins, 10-cent coins and 50-cent coins in John's coin box. 35 of these coins are 5-cent coins. The number of 50-cent coins is thrice the number of 10-cent coins.
  1. How many 50-cent coins are there?
  2. What is the total value of the 50-cent coins in John's coin box?