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.
5 tins of soup have a total weight of 1750 grams.
--> from this, we can calculate the total weight of 1 tin of soup, with 1750÷5 = 350 grams
4 tins of soup and 3 packets of soup have a total weight of 1490 grams.
--> now we know that 1 tin is 350 grams. To find out the weight of the packets, we need to deduct the weight of the 4 tins, thus 1490-4x350 = 90 grams
--> 90 grams is the weight of 3 packets of soup, thus 90÷3=30 grams is the weight of 1 packet.
Work out the total weight of 3 tins of soup and 2 packets of soup.
--> now we know the weight of 1 tin and one packet of soup, too, so we can make the equation:
--> 3x350 + 2x30 = 1110 grams
ES
Related Maths GCSE answers
All answers ▸Solve algebraically the simultaneous equations x2 +y2 =25 and y – 3x = 13
Find the points that the graph "y = x^2 -4x -14" touches the x-axis
Ed has 4 cards. There is a number on each card. Three of the numbers are 12, 6 and 15. The mean of the numbers is 10. What is the fourth number?
The price of a pencil grows by 1%. What is the final crice if the initial price was £1?