Simple, .3 centimeters a day.
3/10=.3
116100 will be 90% of the selling price
The will need to sell for 116100 / 90 x 100 = $129000
37 is a prime number which means it is only divisible by 1 and 37, therefore the only number that can go into 37 and 100 is 1.
Hope it helps. ☺