<image>The chart shows the statistics of sixth-grade students at Xiangyang Primary School participating in various interest groups:
(1) There are 60 students in the Science and Technology Group. How many students are there in total in the sixth grade at Xiangyang Primary School?
(2) How many students are in the Calligraphy Group, Art Group, and Singing Group respectively? How many more students are there in the Science and Technology Group than in the Calligraphy Group?
(3) Can you propose another question and solve it?