# The price tag on a tennis ball in 1975 read \$0.10, and the price tag on a tennis ball in 2005 read \$1.00. The CPI in 1975 was 52.3, and the CPI in 2005 was 191.3. In 1975 dollars, a 1975 tennis ball cost \$0.10 and a 2005 tennis ball cost \$0.27, so tennis balls were cheaper in 1975. \$3.66, so tennis balls were cheaper in 1975. \$3.66, so tennis balls were cheaper in 2005. \$0.27, so tennis balls were cheaper in 2005.

The price tag on a tennis ball in 1975 read \$0.10, and the price tag on a tennis ball in 2005 read \$1.00. The CPI in 1975 was 52.3, and the CPI in 2005 was 191.3. In 1975 dollars, a 1975 tennis ball cost \$0.10 and a 2005 tennis ball cost

\$0.27, so tennis balls were cheaper in 1975.

\$3.66, so tennis balls were cheaper in 1975.

\$3.66, so tennis balls were cheaper in 2005.

\$0.27, so tennis balls were cheaper in 2005.

In 1975, CPI was 52.3 and in 2005 CPI was 191.3 . We can see CPI have changed since 1975. A tennis ball’s price in 1975 was \$0.10 .

Price rise = CPI in 2005 / CPI in 1975

Price rise = 191.3 /52.3

Price rise = 3.66 , Tennis balls were cheaper in 1975.

Option B is correct.

Asked on February 15, 2018 in