Question

dhruvin completes a work in 8 hours of instead of 10 hours. labor rate per hour is rs 5. what he will earn as per Rowan plan? ​please answer

Answer 1

ANSWER :

• ❖ If Dhruvin completes a work in 8 hours of instead of 10 hours and labour rate per hour is Rs. 5; then as per Rowan plan, he will earn Rs. 8.

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SOLUTION :

❒ Given :-

• Dhruvin completes a work in 8 hours of instead of 10 hours.

• Labour rate per hour is Rs. 5.

❒ To Calculate :-

• Bonus as per Rowan Plan = ?

❒ Formula :-

• Bonus under Rowan System is calculated as under :

$\dag \: \: \underline{ \boxed{ \bold{ \: Bonus = \dfrac{Time \: \: Taken}{ Time \: \: Allowed} \times Time \: \: Saved \times Rate \: \: Per \: \: Hour \: }}}$

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❒ Calculation :-

Here,

• Time Taken = 8 hours

• Time Allowed = 10 hours

So,

• ✠ Time Saved = Time Allowed - Time Taken

➨ Time Saved = 10 hours - 8 hours

➨ Time Saved = 2 hours

Now,

• Time Saved = 2 hours

• Rate Per Hour = Rs. 5

Using the formula of Bonus under Rowan System, we get,

• $\bigstar \: \: \sf{ \: Bonus = \dfrac{Time \: \: Taken}{ Time \: \: Allowed} \times Time \: \: Saved \times Rate \: \: Per \: \: Hour \: }$

$\implies \: \sf{Bonus = \dfrac{8 \: hours}{10 \: hours} \times 2 \: hours \times Rs. \: 5}$

$\implies \: \sf{Bonus = \dfrac{4 \: hours}{5\: hours} \times 2 \: hours \times Rs. \: 5}$

$\implies \: \sf{Bonus = \underline{Rs. \: 8}}$