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8 sharpeners cost 48.00 and 7 rulers cost 28.00 jenny bought 6 sharpeners in 5 rulers.how much did she spent alltogether

Sagot :

Shinalcantaraidn
Let 'x' be the cost of 1 sharpener
      'y' be the cost of 1 ruler
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-8 sharpeners cost 48
8x = 48
Divide the whole equation with 8
8x/8 = 48/8
x = 6
Sharpener costs 6 per piece
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-7 rulers cost 28
7y = 28
Divide the whole equation with 7
7y/7 = 28/7
y = 4
Ruler costs 4 per piece
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-Jenny bought 6 sharpeners and 5 rulers
6x + 5y = cost
6(6) + 5(4) = cost
36 + 20 = cost
56 = cost
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Therefore she spent 56.00
Jers15idn
Let
x-sharpeners
y-rulers

8x=48
x=6
The cost of each sharpeners is 6

7y=28
y=4
The cost of each ruler is 4

cost=6x+5y
cost=6(6)+5(4)
cost=36+20
cost=56

Therefore she spent 56 on 6 sharpeners and 5 rulers.

Hope this helps =)
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