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3 years ago

Divide £21 in ratio 3:4

Mathematics

1 answer:

xxMikexx [17]3 years ago

3 0

3+4 = 7
so
21 / 7 3

3 x 3 = 9
3 x 4 = 12

answer
£21 in ratio 3:4 is £9:£12

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1. 3x-4y = 8

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What is the equation of a line that passes through the points (–3, 4) and (2, 8)?

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3 years ago

Omar has decided to purchase an $11,000 car. He plans on putting 20% down toward the purchase, and financing the rest at 4.8% in

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Answer:

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Step-by-step explanation:

* Lets explain how to solve the problem

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- He plans on putting 20% down toward the purchase

* Lets find the value of the 20%

∵ The principal value is $11000

∴ the value of the 20% = 20/100 × 11000 = 2200

∴ He will put $2200 down

* Lets find the balance to be paid off on installments

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* Lets find the rule of the monthly payment

∵ $pmt=\frac{\frac{r}{n}[P(1+\frac{r}{n})^{nt}]}{(1+\frac{r}{n})^{nt}-1}$ , where

- pmt is the monthly payment

- P = the investment amount

- r = the annual interest rate (decimal)

- n = the number of times that interest is compounded per unit t

- t = the time the money is invested or borrowed for

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∵ r = 4.8/100 = 0.048

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∵ t = 3

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