Q. 2.79 Eric paid $19.88 for stamps. The... [FREE SOLUTION]

91影视

Intermediate Algebra

OPENSTAX

$Math Studyset 91影视 Explanations$ Math

OER 2017 Edition 路 1346 pages

ISBN: 9780998625720

Chapter 2: Q. 2.79 (page 152)

Eric paid $19.88 for stamps. The number of 49-cent stamps was eight more than twice the number of 35-cent stamps. How many 49-cent stamps and how many 35-cent stamps did Eric buy?

Short Answer

Expert verified

The number of 35-cent stamps = 12

The number of 49-cent stamps = 32

Step by step solution

Step 1. Given data

Eric paid $19.88 for stamps. The number of 49-cent stamps was eight more than twice the number of 35-cent stamps.

Step 2. To Find

How many 49-cent stamps and how many 35-cent stamps did Eric buy?

Step 2. Explanation

Let the number of 35-cent stamp = x

Then the number of 49-cent stamp = 2x+8

Type	$N u m b e r 脳 V a l u e ($) = T o t a l V a l u e ($)$
49 cent stamps	2x+8	0.49	0.49(2x+8)
35 cent stamps	x	0.35	0.35x
			$19.88

Step 4. Calculation

After analyzing the table, we can say that -

$0.49 (2 x + 8) + 0.35 x = 19.88$

$0.98 P + 3.92 + 0.35 x = 19.88$

$1.33 P = 15.96$

$P = 12$

The number of 35-cent stamps = 12

The number of 49-cent stamps = (2x+8)

= $(2 脳 12 + 8)$

= 32

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91影视

Eric paid $19.88 for stamps. The number of 49-cent stamps was eight more than twice the number of 35-cent stamps. How many 49-cent stamps and how many 35-cent stamps did Eric buy?

Short Answer

Step by step solution

Step 1. Given data

Step 2. To Find

Step 2. Explanation

Step 4. Calculation

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