Question

Annie enjoys going to the beach to look for shells. On Saturday, she found 4 times as many shells as she found on Sunday.If Annie found 21 more shells on Saturday than on Sunday, how many shells did she find altogether over the weekend?

Answer 1

Given

On Saturday, she found 4 times as many shells as she found on Sunday.

Saturday = 4*Sunday

Saturday = 21 + Sunday

Two system equations, now we can solve:

4*Sunday = 21 + Sunday

3*Sunday = 21

Sunday = 7 Shells

Saturday = 28 Shells

Total = 35 Shells