{"id":714,"date":"2018-02-17T16:57:43","date_gmt":"2018-02-17T18:57:43","guid":{"rendered":"http:\/\/eliezerladeira.com.br\/blog\/?p=714"},"modified":"2018-08-31T16:02:59","modified_gmt":"2018-08-31T19:02:59","slug":"raciocinio-logico-19","status":"publish","type":"post","link":"https:\/\/eliezerladeira.com.br\/blog\/raciocinio-logico-19\/","title":{"rendered":"Racioc\u00ednio L\u00f3gico #19"},"content":{"rendered":"

[ratings]<\/p>\n

Hoje, a diferen\u00e7a entre as idades de Roberto Carlos e Carlos Roberto \u00e9 de 15 anos. Qual ser\u00e1 a diferen\u00e7a entre as idades quando Roberto Carlos tiver o dobro da idade de Carlos Roberto?<\/p>\n

a) 15 anos
\nb) 30 anos
\nc) 45 anos
\nd) 20 anos<\/p>\n

Gabarito:<\/strong> letra a<\/p>\n

Roberto Carlos = x
\nCarlos Roberto = y<\/p>\n

x – y = 15
\nx = 2y<\/p>\n

Usando o m\u00e9todo de substitui\u00e7\u00e3o, temos:<\/p>\n

2y – y = 15
\ny = 15<\/p>\n

Substituindo o valor de y na segunda equa\u00e7\u00e3o, temos:<\/p>\n

x = 2y
\nx = 2 * 15
\nx = 30<\/p>\n

Roberto Carlos (x) tem 30 anos e Carlos Roberto (y) tem 15 anos, logo, a diferen\u00e7a de idade \u00e9:<\/p>\n

x – y
\n30 – 15 = 15<\/p>\n

Sendo assim, a diferen\u00e7a de idade quando Roberto Carlos tiver o dobro da idade de Carlos Roberto \u00e9 de 15 anos.<\/p>\n","protected":false},"excerpt":{"rendered":"

[ratings] Hoje, a diferen\u00e7a entre as idades de Roberto Carlos e Carlos Roberto \u00e9 de 15 anos. Qual ser\u00e1 a<\/p>\n","protected":false},"author":1,"featured_media":610,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[139],"tags":[54,143,141,140,142],"class_list":["post-714","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-raciocinio-logico","tag-concurso","tag-enem","tag-logica","tag-raciocinio","tag-vestibular"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/eliezerladeira.com.br\/blog\/wp-content\/uploads\/2017\/08\/raciocinio_logico.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":676,"url":"https:\/\/eliezerladeira.com.br\/blog\/raciocinio-logico-7\/","url_meta":{"origin":714,"position":0},"title":"Racioc\u00ednio L\u00f3gico #7","author":"admin","date":"","format":false,"excerpt":"[ratings] Considere verdadeira a declara\u00e7\u00e3o: \"Se x \u00e9 par, ent\u00e3o y \u00e9 \u00edmpar.\" Com base na declara\u00e7\u00e3o, \u00e9 correto concluir que, se: a) x \u00e9 \u00edmpar, ent\u00e3o y \u00e9 par b) x \u00e9 \u00edmpar, ent\u00e3o y \u00e9 \u00edmpar c) y \u00e9 \u00edmpar, ent\u00e3o x \u00e9 par d) y \u00e9 par,\u2026","rel":"","context":"Em "Racioc\u00ednio L\u00f3gico"","block_context":{"text":"Racioc\u00ednio L\u00f3gico","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/disciplinas\/raciocinio-logico\/"},"img":{"alt_text":"Quest\u00f5es para concurso - Racioc\u00ednio L\u00f3gico","src":"https:\/\/i0.wp.com\/eliezerladeira.com.br\/blog\/wp-content\/uploads\/2017\/08\/raciocinio_logico.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/eliezerladeira.com.br\/blog\/wp-content\/uploads\/2017\/08\/raciocinio_logico.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/eliezerladeira.com.br\/blog\/wp-content\/uploads\/2017\/08\/raciocinio_logico.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/eliezerladeira.com.br\/blog\/wp-content\/uploads\/2017\/08\/raciocinio_logico.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":679,"url":"https:\/\/eliezerladeira.com.br\/blog\/raciocinio-logico-8\/","url_meta":{"origin":714,"position":1},"title":"Racioc\u00ednio L\u00f3gico #8","author":"admin","date":"","format":false,"excerpt":"[ratings] Quest\u00e3o retirada da prova de 2005 para Analista de Planejamento e Or\u00e7amento, do Minist\u00e9rio de Planejamento, Or\u00e7amento e Gest\u00e3o (MPOG), realizada pela Esaf. 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