Ron haslam gets a social security benefit of $1,200 per month. his wife receives a benefit equal to 40 percent of ron's benefit. if they take an additional $250 per month from savings, what will their monthly income be?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?