Предмет: Математика, автор: gergdsgt

мастер должен изготовить 90 деталей за 6 часов. однако он успевал сделать в час на 3 детали больше, чем предполагал .на сколько быстрей он сделал эту работу

Ответы

Автор ответа: LenFace
5

90/6=15 деталей за 1час 15+3=18 деталей он сделает за час и 90/18=5 часов ответ: за 5 часов

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ПОМОГИТЕ!!!
Past Simpl or Past Continuous?
1.From the sounds it was clear that she (practice)____________ the piano. 2. When I (go)_______ out last morning, the sun (shine)__________________ and the birds (sing)__________________. I (walk)______________ to the park. But while I (sit)________________ there, black clouds (gather)____________ and (hide)_______________ the sun. It (begin)____________ to rain, so I (run)_______________ home. My hat (fall)__________ off as I (run)______________.3. Jack’s dad (read)_____________a book last night when he (heard)_______________ a noise in the garden. He (open)__________ the window and (look)__________ out. It (be) a dark night. While he (shut)_____________ his window, he (see)___________a man. The man (try)______________ to climb over the garden wall. He (be) a thief. When he (see)________ Jack’s dad at the window, he (jump)____________ off the wall and (run) _________ away. The thief (reach)_____________ the car but just as he (get)________________ into it Jack’s dad (stop)____________ him. 4. I (come)________ into the room when Mary (play)________________ the piano. 5. She (live)___________ in England when the war (begin)____________. 6. My hat (flow)__________ off when I (cross)_____________ the street. 7. The pupils still (write) ________ their compositions when the bell (ring)___________. 7. Where he (live)____________ when you (see)___________ him last? 8. He (lost)______________ his purse while he (see)______ the sights of Rome. 9. He (walk)________ home when the rain (begin)________. 10. The sick child (sleep)______________ when the doctor (come)_________.
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