SOLUTION: Ailing bought 3 similar big cakes and 4 similar small cakes . The total mass of the 7 cakes is 9.62kg. The mass of the big cake is twice the mass of the small cake. Find the total

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Question 890952: Ailing bought 3 similar big cakes and 4 similar small cakes . The total mass of the 7 cakes is 9.62kg. The mass of the big cake is twice the mass of the small cake. Find the total mass of the 4 small cakes in kg , correct to 1 decimal place
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39629)   (Show Source): You can put this solution on YOUR website!
mass of small cake, y
mass of big cake, x

kg, accounting for mass of the bought seven cakes.

Mass relation description gives , but possible misunderstanding.




, mass of one big cake.
-

but you want to know 4y, meaning FOUR of the small cakes mass.


To one decimal place, 1.6 kg.
Answer by MathTherapy(10556)   (Show Source): You can put this solution on YOUR website!

Ailing bought 3 similar big cakes and 4 similar small cakes . The total mass of the 7 cakes is 9.62kg. The mass of the big cake is twice the mass of the small cake. Find the total mass of the 4 small cakes in kg , correct to 1 decimal place


Mass of 1 small cake:  0.962 kg

Mass of 4 small cakes: 0.962(4), or 3.848 ≈  kg 

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