15 The price of a badminton racket can be bought with a table tennis racket of 15*2=30.
I bought/kloc-0.5 pairs of badminton rackets and 20 pairs of table tennis rackets, and spent/kloc-0.000 yuan.
That is to say, it costs 1000 yuan to buy 50 pairs of table tennis bats.
1000/50 Each ping-pong bat = 20 yuan.
20*2= 40 yuan for each badminton racket.