Which strategies can be used to solve this problem?

rosa organized a game day at her house. she plans to have 2 groups of 5 people play charades, and 3 groups of 4 people play board games. what is the greatest number of people who could be at rosa's game day?

choose all answers that are correct.

a.
draw a diagram.
draw 2 squares and 5 circles. then draw 3 squares and 4 circles. add the total number of squares and circles.

b.
use logical reasoning.
think that finding 2 groups of 5 is the same as 2 × 5 = 10 and that 3 groups of 4 is the same as 3 × 4 = 12. then add 10 + 12.

c.
model the problem.
show 2 groups of 5 chips and 3 groups of 4 chips. then count all the chips.

d.
translate into an equation.
2 × 3 × 4 × 5 = n