I put A before and my post was deleted.....
Sorry not to sure about this answer and don’t want to get it wrong sorry
Honi maded the mistake in step 1
Answer:
75 000 000
Step-by-step explanation:
45×70= 3150
60×50 = 3000
3150 ... 78750000
3000 ... x
3000×78750000÷3150=75 000 000
X = 1st evening, y = 2nd evening, z = 3rd evening
x + y + z = 83
x = z + 7
y = 2z
z + 7 + 2z + z = 83
4z + 7 = 83
4z = 83 - 7
4z = 76
z = 76/4
z = 19 <=== 3rd evening calls
x = z + 7
x = 19 + 7
x = 26 <=== 1st evening calls
y = 2z
y = 2(19)
y = 38 <=== 2nd evening calls