Вопрос школьника по предмету Математика
Сумма двух чисел равна 36. 2/5 одного числа равны 60% другого. Найти эти числа.
Прошу помогите
Ответ учителя по предмету Математика
х — одно число
у — другое число
{х + у = 36
{2/5х = 0,6у
х = 36 — у
2/5(36 — у) = 0,6у
14,4 — 0,4у = 0,6у
-0,4у- 0,6у = — 14,4
-у = — 14,4
у = 14,4
х + 14,4 = 36
х = 36 — 14,4
х = 21,6
Ответ : 21,6 ; 14,4
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