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Standard XII

Mathematics

Axiomatic Approach

On a certain ...

Question

On a certain job, Robin was paid 6 $a n h o u r f o r t h e f i r s t$ 10 $h o u r s s h e w o r k e d . F o r t h e t i m e s h e w o r k e d b e y o n d$ 10 $h o u r s, s h e w a s p a i d$ $9$ an hour. If she worked $20$ hours on this job, how much was Robin paid?

60$

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90$

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120$

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150$

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180$

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Solution

The correct option is D 150 $F o r f i r s t 10 h o u r s R o b i n i s p a i d 10 x 6 = 60$
For next 10 hours Robin is paid 10x9=90 $
So toatal 60+90=150 $

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On a certain job, Robin was paid 6anhourforthefirst10hourssheworked.Forthetimesheworkedbeyond10hours,shewaspaid 9 an hour. If she worked 20 hours on this job, how much was Robin paid?

The correct option is D 150Forfirst10hoursRobinispaid10x6=60For next 10 hours Robin is paid 10x9=90 $ So toatal 60+90=150 $

On a certain job, Robin was paid 6 $a n h o u r f o r t h e f i r s t$ 10 $h o u r s s h e w o r k e d . F o r t h e t i m e s h e w o r k e d b e y o n d$ 10 $h o u r s, s h e w a s p a i d$ $9$ an hour. If she worked $20$ hours on this job, how much was Robin paid?

The correct option is D 150 $F o r f i r s t 10 h o u r s R o b i n i s p a i d 10 x 6 = 60$
For next 10 hours Robin is paid 10x9=90 $
So toatal 60+90=150 $