Answer:
a because you dont have to pay that much back your your friend if you dont buy the magazines then you will only have to pay $12 to your friend and if you buy the magazines then you have to pay $21
Step-by-step explanation:
D
72+21-11=82
82-67=15
HCF of 120 and 180 is 60 and hence a measuring tin of 60 litre volume should be bought.
Sn = n/2[2a + (n-1)d]
n=11
a=2
d=3
Sn= 11/2[2(2) + (11-1)3]
Sn= 11/2(34)
Sn = 11x17
=187.
