The new dimensions;
(11x0.6)cm by (10x0.6)cm
6.6cm by 6cm
Solution:
we are given that
Dan borrowed $750.00(=P) from his brother who is charging him 8% (=r)simple interest.
Dan pays his brother back in 6 months(=t).
we have been asked to find- how much does he have to pay back including the interest?
As we know that

Substitute the values we get

Hence net payable amount is 750+30=$780
I can't factor that.
Is the equation input correctly?
50+5x=total profit. To get 10% of 50 you would multiply .1x50= 5. X would be the amount of days past so 10th day = $100 total but $50 profit and 30th day = $200 total but $150 profit