There are 345 red balloons and 335 yellow balloons. Amit mixes them together and divides them into groups of 8. How many groups of balloons are there?
Anjana scored a total of 310 marks in Science,
Mathematics, Hindi and English. She scored 70
marks in English, 64 marks in Hindi and 82 marks
in Science. How much more marks did she score in
Mathematics than in Hindi?