IDNLearn.com provides a collaborative platform for sharing and gaining knowledge. Our platform is designed to provide reliable and thorough answers to all your questions, no matter the topic.
Answer:
a) 40kg b) 245g
Step-by-step explanation:
a) the total mass of the group of 4 students is 30 x 4 = 120
the total mass of the group of 5 students is 32 x 5 = 160
160 - 120 = 40
b) the total mass of 5 articles is 215 x 5 = 1075
the total mass of 6 articles is 220 x 6 = 1320
1320 - 1075 = 245