Question

Thear is an audiorium with 25 rows of seats ,25 seats in first row 30 in second 35 in third​

Answer 1

Step-by-step explanation:

total 25 rows

1st row 25,2nd row 30,3rd row 35

so for every row 5 is increasing

no.of rows × first row seats + no.of rows × same increasing no.for all rows= 25×25+25×5

= 625+125

=750

this method is applicable for only this model