kilogram is an si unit my friend
50 - 5n = 15
if you need to find the number n then
50 - 5n = 15
-5n = -35
n = 7
6 is in the ten millions place. The number next to 6 is 1, which is less than 5, so you round down. The nearest 10 million is 60,000,000.
D) 36
7 - 3 + 5 = 9 × 4 = 36
I would go with A but I am not 100% sure so you may want to check however you can.
