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Math problem: Guanghua primary school held a painting competition for primary school students.
(1) The first solution:100%+50% =150% 60×150% = 90 (amplitude).

The second solution: 60×50%=30 (width) 60+30=90 (width)

A: 90 of them won the second prize.

(2)100%-50% = 50% 90 ÷ 50% =180 (width)

A: 180 won the third prize.

The second unit "1" won the third prize, not the second prize. After checking, I knew I was right.