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kolezko [41]
1 year ago
6

Dad has 15 oak and maple boards from the lumber yard. each oak board is 6 centimetres thick. each maple board is 9 centimetres t

hick. when my dad stacks the boards, the stack is 96 centimetres thick. how many of each type of board does he have?
Mathematics
2 answers:
Kazeer [188]1 year ago
8 0

Answer:

He has 2 maple boards and 13 oak boards.

Step-by-step explanation:

Assuming all boards are oak : 6*15=90

Maple minus oak = 3

96-90=6 6/3=2 maple boards

Verification : 2*9+6*13 = 96

Andrej [43]1 year ago
3 0

Answer:

13 oak, 2 maple

Step-by-step explanation:

o = oak

m = maple

o + m = 15

6o + 9m = 96

o + m = 15

o = 15 - m

6o + 9m = 96

6(15 - m) + 9m = 96

90 - 6m + 9m = 96

90 + 3m = 96

3m = 6

m = 2

o + 2 = 15

o = 13

6(13) + 9(2) = 96 (Yes, correct!)

<u>Brainliest, please :)</u>

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