Manoj brought some red pencil at9 for ₹ 10 and an equal number of blue pencil at 11 for ₹ 10.if all pencils are sold at 10 for ₹10.find the loss %or gain% .answer is 1

answer:

step-by-step explanation:

cost price of 9 red pencils and 11 blue pencils = 10 + 10 = ₹ 20

                          cost of 20 pencils                     = ₹ 20

                      selling price of   10 pencils             = ₹ 10

                      selling price of   20 pencils             = ₹ 20

no loss and no gain

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°

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