Предмет: Математика, автор: iekatierinafrolova81

. Брат и сестра сделали покупку на 90 грн. Брат заплатил 0,3 стоимости покупки, а сестра остальную сумму. Сколько денег заплатила сестра за покупку? помогите...

Ответы

Автор ответа: olyarazym422

1) 90 * 0,3 = 27 грн заплатил брат

2) 90 - 27 = 63 грн заплатила сестра

Mashadro111: 1 ) 90*03=27 ( грн ) заплатил брат
2) 90- 27=63 ( грн ) заплатила сестра
УДАЧИ!!!!))))

olyarazym422: не копируй

iekatierinafrolova81: спасибо.

Автор ответа: Katrrin085

0.3=30%
100-30=70%-заплатила сестра
(90*70):100=63 заплатила сестра

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