Respuesta :

HomertheGenius
A thickness of a dime is :
1  7/20 mm = 27/20 mm
78  3/10 mm : 27/20 mm =
= 783/10 : 27/20 =
= 783/10 * 20/27 = ( 783 * 20 ) / ( 10 * 27 ) =
= 15,660 / 270 = 58
Answer: He has 58 dimes.