Question

Class 7th and 8th planted trees in their school premises. Class 8th planted 16 more trees than class 7th. if they planted 200 trees together. Find the trees planted by class 7th.
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Answer 1

Answer:

Step-by-step explanation:let trees planted by sec B be x

therefore, trees planted by sec A will be 3x+5

total trees will be x+3x+5 =4x+5=221

4x=216

x=54

3x+5=162+5=167

therefore, trees planted by secA is 167

Answer 2

Answer:

$number \: of \: trees \: planted \: by \: 7th \: class \: = 92$

Step-by-step explanation:

$let \: the \: number \: of \: trees \: planted \: by \: 8th \: class = x \\ number \: of \: trees \: planted \: by \: 7th \: class = x + 16 \\ \\ therefore \: \: \: x + (x + 16) = 200 \\ 2x = 200 - 16 \\ 2x = 184 \\ x = 92\\ \\ then \: the \: number \: of \: trees \: planted \: by \: 7th \: class \: = 92$