In 2008, a cure for cancer walk sold 21 pink sponsorships and 10 gold sponsorships for a total of $770. In 2009 the walk collected $840 by selling 7 pink sponsorships and 20 gold sponsorships. What is the cost of one pink sponsorship?
In 2008, a cure for cancer walk sold 21 pink sponsorships & 10 gold sponsorships for a total of $770. In 2009, the walk collected $840 by selling 7 pink sponsorships and 20 gold sponsorships. The cost of one sponsorship is approximately $20.
