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Ann’s tree is 76 inches tall and is growing at a rate of 3.6
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08 Oct 2020, 04:41
08 Oct 2020, 04:41
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Question Stats:
83% (01:19) correct
16% (02:07) wrong based on 56 sessions
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Ann’s tree is 76 inches tall and is growing at a rate of 3.6 inches per year. Bob’s tree is 58 inches tall and is growing at a rate of 4.8 inches per year. In how many years will Bob’s tree reach Ann’s tree in height?
A. 12
B. 14
C. 15
D. 20
E. 25
A. 12
B. 14
C. 15
D. 20
E. 25
Re: Ann’s tree is 76 inches tall and is growing at a rate of 3.6
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08 Oct 2020, 07:19
08 Oct 2020, 07:19
1
let it be x years
ann's tree height after x years =76+3.6x
bob's tree height after x years =58+4.8x
after x years given height of two trees are equal
76+3.6x = 58+4.8x
18=1.2x
x=15
answer C is correct
ann's tree height after x years =76+3.6x
bob's tree height after x years =58+4.8x
after x years given height of two trees are equal
76+3.6x = 58+4.8x
18=1.2x
x=15
answer C is correct
Re: Ann’s tree is 76 inches tall and is growing at a rate of 3.6
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28 Jun 2021, 19:38
28 Jun 2021, 19:38
76-58/4.8-3.6
