SAT score in addition to ACT?

My son already sent his ACT scores to the colleges he will be applying to. He got a 35 which I know is a solid score. He took the SAT and scored 1510 (790 Math, 720 Verbal). Although this too is a good score, it is considered slightly lower than the 35 ACT he achieved (given websites visited that does the conversions).

Although he does not plan to major in Math, he looks to apply his Math skills (ex., analytics, statistics, data analysis) to a business/marketing program of study in college. As such, should he send in his SAT scores showing his strength in math? Could it hurt or support his application?

You might decide by checking the SAT/ACT values in the Common Data Set for each school. If one is higher than median and one lower, send only the higher one? But both scores seem fine for some selective schools.