salvxxdor salvxxdor

10-03-2021
Mathematics

contestada

A pencil and an eraser cost € 1.40 (total cost).
Knowing that pencils are € 1 more expensive than eraser, how much does eraser cost?

Respuesta :

xmaalpa xmaalpa

10-03-2021

Answer:

Eraser cost €0,2

Step-by-step explanation:

Cost of ereaser - x

Cost of pencil - x + 1

x + x + 1 = 1,4

2x + 1 = 1,4

2x = 0,4

x = 0,2

Answer Link

Otras preguntas

The priestly class of Indian society was the Vaisyas. Brahmans. Sudras. Kshatriyas.

2. How does kinetic energy affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at 60 mph? 3. How does kinetic e

Calculate the pH of a 0.30 M NaF solution. The Ka value for HF is 7.2*10^-4

Energy from the sun reaches Earth mostly by........... A)Conduction B)Convection C) Radiation D) Thermal Expansion.

Which two entrepreneurs believed they were examples of social Darwinism at work? A.Thomas Edison and George Westinghouse B.Andrew Carnegie and John D. Rockefell

What do the brackets in chemical equations mean? Im new to chemistry, what do brackets in chemical equations mean? Ca (OH)2 What does the (OH) here symbolise? K

How to determine the charge of a polyatomic ion?

During an experiment on frog embryos, a scientist removes a few cells from the neural tube. What effect would this have on the embryo? A. Development of the ner

Medinas capture the unique historical character and social patterns of cities in North Africa and Southwest Asia. Labyrinths of winding alleys and many kinds of

In what ways is the Holy Land an important site for all three monotheistic faiths?