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Alvin had 30 beads more than Bobby Cathy had thrice as many beads as
Alvin. They had a total of 345 beads. How many beads did Bobby have?

Respuesta :

Answer:

Bobby has 45 beads

Step-by-step explanation:

Let x be the number of beads Bobby has.

Then, (x + 30) is the number of beads Alvin has.

Then, 3 (x + 30) is the number of beads Cathy has.

3 (x + 30) + (x + 30) + x = 345

3x + 90 + x + 30 + x = 345

5x + 120 = 345

5x = 225

x = 45

Therefore, Bobby has 45 beads.

RandomDudeOutside
Alvin: 1U
Bobby: 1U + 30
Cathy: 3U
345-30= 315
315/5{units)= 63
63+30= 93
Bobby had 93 beads