Ans 1: (Master Answer)
(D):
Weight on machine A = 250 grams
Weight on machine B after placing a mango on it = 150 +170 = 320 grams
Weight on machine C = 170 grams
(D):
Weight on machine A = 250 grams
Weight on machine B after placing a mango on it = 150 +170 = 320 grams
Weight on machine C = 170 grams
(D)
Number of flowers sold by students of grade 4 = 20
Number of flowers sold by students of grade 5 = 35
Number of flowers sold by students of grade 6 = 15
Total number of flowers sold by all students = 20+35+15 =70