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5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

Let tins be represented by XLet packets be represented by Y
5X= 1750X=350
4X+3Y=14904(350)+3Y=14901400+3Y=14903Y=90Y=30
3X+2Y= (3x350) + (2x30)= 1050+ 60= 1110

Answered by Joe C. • Maths tutor

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A sequence increases by 5 each time and the first term is x. The sum of the first four terms is 54. Set up and solve an equation to work out the value of x.

How do you solve this problem?

Work out the integer values that satisfy: x^2−7 x+ 11<0

Factorise: x^2+2x-3

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