For this case, the first thing we must do is define variables:
x: Jane's age
y: Helen's age
By writing the system of equations we have:
y = x + 8
y-20 = 3 (x-20)
Solving the system we have:
x = 24
y = 32
Answer:
Jane is 24 years old
Helen is 32 years old
the equation for Jane would look like:
x + 8 = 3 (x-20) + 20
Five grams is equal to 1 teaspoon
(32.75+39.88)=72.63= cost of both meal. 14% of this total cost is 10.1682. add that to the cost of the meal to get the total cost. 72.63+10.1682=$82.80 (rounded to nearest cent)
Answer:
£30 and £24
Step-by-step explanation:
sum the parts of the ratio, 5 + 4 = 9 parts
Divide the amount by 9 to find the value of one part of the ratio
£54 ÷ 9 = £6 , then
5 parts = 5 × £6 = £30
4 parts = 4 × £6 = £24
Sam gets £30
Bethan gets £24
Answer: 145
Step-by-step explanation:
you have to find what x is based on the other side
4x+15+30x-5=180
x=5
plug in 5 in 20x+45
which equals 145
