Question

q-19 using the following formula, find the value of c when f = 68. c = 5/9(f - 32). (a) 20 (b) 38 (c) 36 (d) 180 q-20 the browns bought an $800.00 electric range marked at a 25% discount. they made a down payment of $150.00 and agreed to pay the balance in 12 equal monthly installments. how much was each installment? (a) $50.00 (b) $37.50 (c) $67.00 (d) $54.00

Explanation:

Step1: Substitute F value into formula

Substitute $F = 68$ into $C=\frac{5}{9}(F - 32)$. So we get $C=\frac{5}{9}(68 - 32)$.

Step2: Calculate value in parentheses

First calculate $68-32 = 36$. Then the formula becomes $C=\frac{5}{9}\times36$.

Step3: Multiply fractions and number

$\frac{5}{9}\times36=5\times4 = 20$.

Step1: Calculate discounted price

The original price of the electric - range is $800$. The discount is 25%, so the price after discount is $800\times(1 - 0.25)=800\times0.75 = 600$.

Step2: Subtract down - payment

They made a down - payment of $150$. So the balance is $600 - 150=450$.

Step3: Calculate monthly installment

They will pay the balance in 12 equal monthly installments. So each installment is $\frac{450}{12}=37.5$.

Answer:

A. 20