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stepladder [879]
3 years ago
12

The ages of three cats are a, a+4 and 2a-3. Their total age is 21. Determine a.

Mathematics
2 answers:
Anastaziya [24]3 years ago
6 0

Answer:

Ages of cats => a, a+4, 2a-3

Thus,

a + a + 4 + 2a - 3 = 21 \\  \\ 4a + 1 = 21 \\  \\ 4a = 20 \\  \\ a = 5

The a is 5.

Furkat [3]3 years ago
4 0
A+a+4+2a-3= 21

combine like terms

1+4a= 21
-1. -1

4a= 20
————
4a. 4

a= 5
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