adam and his dad share the cost of a meal in the ratio of 2:3. adam's dad pays £52.20. What is the total cost of the meal?

2 answers:

n200080 [17]3 years ago

8 0

Adam's dad paid £52.20.
This is considered three "parts" of the total cost.
Let's divide by 3 to find the size of one part.
£52.20 ÷ 3 = £17.40
Now, multiply by 5 (Adam's parts + his dad's) to get the total cost.
$\boxed{\£87}$

Ede4ka [16]3 years ago

8 0

(I'll do it with a dollar sign cause I don't have pounds on my laptop).

- Adam's Dad pays 3/5 parts of the meal

- Adam's dad pays $52.20 that equal 3/5

- Adam pays 2/5

-Divide A's dads payment of $52.20 by 3

- That means $17.40 is 1/5

- $17.40 x 5 = $82 and that is the full meal

Done :)

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Angelina_Jolie [31]

Answer:

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Step-by-step explanation:

Question

A Galapagos cactus finch population increases by half every decade. The number of finches is modeled by the expression

where d is the number of decades after the population was measured. Evaluate the expression for d = −2

Given :

The number of finches is modeled by the expression :

⇒ $45\cdot1.5^d$

where $d$ is the number of decades after the population was measured.

To evaluate the expression for d=-2

Solution:

In order to evaluate the given expression to find the number of finches at $d=-2$ , we will plugin $-2$ for $d$ in the expression and simplify it.