Question

8 पेंसिल, 5 कलम तथा 3 रबड़ का मूल्य 111रु. है। 9 पेंसिल, 6 कलम तथा 5 रबड़

का मूल्य 130 रु. है। 16 पेंसिल, 11 कलम तथा 3 रबड़ का मूल्य 221 रु. है। 39 पेंसिल, 26 कलम तथा 13 रबड़ का मूल्य (रु. में) क्या है?​

Answer 1

Answer:

$Answer:</p><p></p><p>Given :-</p><p></p><p>It takes time 8 mins for reach from the sun to the Earth surface.</p><p></p><p>Speed of light is taken to be 3 × 10⁸.</p><p></p><p>To Find :-</p><p></p><p>What is the distance from the sun to the Earth in km.</p><p></p><p>Formula Used :-</p><p></p><p>\clubsuit♣ Distance Formula :</p><p></p><p>\longmapsto \sf\boxed{\bold{\pink{Distance =\: Speed \times Time}}}⟼Distance=Speed×Time</p><p></p><p>Solution :-</p><p></p><p>First, we have to convert minutes into seconds :</p><p></p><p>Given :</p><p></p><p>Time = 8 minutes</p><p></p><p>\implies \sf Time =\: 8\: minutes⟹Time=8minutes</p><p></p><p>Then,</p><p></p><p>\implies \sf Time =\: 8 \times 60\: seconds⟹Time=8×60seconds</p><p></p><p>\implies\sf\bold{\green{Time =\: 480\: seconds}}⟹Time=480seconds</p><p></p><p>Now, we have to find the distancebetween the sun to earth in km :</p><p></p><p>Given :</p><p></p><p>Speed = 3 × 10⁸ m/s</p><p></p><p>Time = 480 seconds</p><p></p><p>According to the question by using theformula we get,</p><p></p><p>\implies \sf Distance =\: 3 \times 10^8 \times 480⟹Distance=3×108×480</p><p></p><p>\implies \sf Distance =\: 3 \times 480 \times 10^8⟹Distance=3×480×108</p><p></p><p>\implies \sf Distance =\: 1.44 \times 10^{11}\: m⟹Distance=1.44×1011m</p><p></p><p>As we know that, [ 1 m = 10-³ km ]</p><p></p><p>So,</p><p></p><p>\implies \sf Distance =\: 1.44 \times {{10}^{11}} \times {{10}^{- 3}}⟹Distance=1.44×1011×10−3</p><p></p><p>\implies \sf Distance =\: 1.44 \times {10}^{(11 - 3)}⟹Distance=1.44×10(11−3)</p><p></p><p>\implies \sf Distance =\: 1.44 \times {10}^{(8)}⟹Distance=1.44×10(8)</p><p></p><p>\implies\sf\bold{\red{Distance =\: 1.44 \times {10}^{8}\: km}}⟹Distance=1.44×108km</p><p></p><p>\therefore∴ The distance between the sun to theEarth in km is 1.44 × 10⁸ km .</p><p></p><p>\rule{150}{2}</p><p></p><p>\bigstar★ EXTRA INFORMATION :</p><p></p><p>\clubsuit♣ Time Formula :</p><p></p><p>\longmapsto \sf\boxed{\bold{\pink{Time =\: \dfrac{Distance}{Speed}}}}⟼Time=SpeedDistance</p><p></p><p>\clubsuit♣ Speed Formula :</p><p></p><p>\longmapsto \sf\boxed{\bold{\pink{Speed =\: \dfrac{Distance}{Time}}}}⟼Speed=TimeDistance</p><p></p><p>$