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Jenny has 3 stacks of coins - A B and C. Altogether the coins equal £1.30. Stack B has 3 times as much money has Stack A. Stack C has 2 times as much money as Stack B. How much money is in Pile C?

3 Stacks of coins - A B CAltogether the stacks add up to 130 pence (let's work in pence so its not too confusing). So, A+B+C=130pStack B has 3 times as much money has Stack A. So B = 3AStack C has 2 times as...
MK
Answered by Mayurey K. • Maths tutor
3292 Views

1: x = 2, 2: y = x + 5 -> Solve this pair of simultaneous equations.

A set of simultaneous equations most commonly represents two lines on a graph, or perhaps a circle, with a line running through it. When you solve a set of simultaneous equations, its important to remember t...
EB
Answered by Eddie B. • Maths tutor
3430 Views

Write down the vector equation of the line l through the point (1,-1,2) and parallel to the vector 2i + 4k

Firstly, you need to see what is being asked to do. You need to find a vector equation of a line.Remember that the vector equation of a line is represented as r = a + λb.r is any point on the line, a is a sp...
CM
Answered by Clare M. • Maths tutor
4583 Views

La cigarette est un vrai problème chez les jeunes. Which social issue is being mentioned here?

Smoking among younger people
LB
Answered by Louis B. • French tutor
2888 Views

How do bacteria have a role in the nitrogen cycle?

This answer is best supported with a whiteboard All living things need nitrogen, but nitrogen gas is too unreactive for plants and animals to use directly. Bacteria's main role in the nitrogen cycle is to be...
KD
Answered by Katie D. • Biology tutor
14110 Views