Answer the 5th question."PLEASE DON'T SEND THE SIMILAR QUERIES.KINDLY SEND THE APPROPRIATE AND STEP BY STEP CALCULATION.

Answer the 5th question."PLEASE DON'T SEND THE SIMILAR QUERIES.KINDLY SEND THE APPROPRIATE AND STEP BY STEP CALCULATION. 4. The cost of 5 kg of Sugar and 7 kg of rice is e 153, and the cost of 7 kg of sugar and 5 kg of rice is 147. Find the cost of 6 kg of sugar and 10 kg of rice. 5. The Class IX students of a certain public school wanted to give a farewell party to the outgoing students of Class X. They decided to purchase two kinds of sweets. one costing e 70 per kg and the other costing e 84 per kg. They estimated that 36 kg of sweets were needed. If the total money spent on sweets was e 2800, find how much sweets of each kind they purchased. 6. If from twice the greater of two numbers 16 is subtracted, the result is half the other number. If frorn half the greater number 1 is subtracted, the result is still half the other number- What are the nuznbers? 7. are 38 coins in a collection Of 20 paise coins and 25 paise coins. If the total value Of collection is e 8-50, how many Of each are there? 8- A man has certain notes Of denominations 20 and e 5 w•hich arnount to e 380. If the number Of notes Of each kind is interchanged, they amount to e 60 less as before. Find tye number Of notes Of each denomination. 9. ratio Of two nurnbers is — . If 2 is subtracted from the first and 8 from the second, the ratio the reciprocal Of the original ratio. Find the numbers. 10. If 1 is added to the numerator Of a fraction, it becomes -2 ; if I is taken frorn the denominator, it becomes find the fraction. 7

Dear student
Let x kg be the sweets of price Rs70/kg and y kg be the sweets of price Rs84/kg.  Now, we are given total quantity of sweets is 36 kg.  Therefore, x + y = 36 ---------(1)  and total money spent on the sweets is Rs.2800   70x + 84y =2800 (2)   Multiplying equation (1) by 70, we get  70x + 70y =2520----------(3)  So, subtracting equation (3) from equation (2),   ( 70x + 84y) - (70x + 70y) = 2800 - 252070x + 84y - 70x -70y = 280 14y = 280 y = 20 kg  Now, putting y = 20 kg in equation (1), we get  x + 20 = 36 x =16kg  Thus, 20 kg sweets of Rs70/kg were purchased and 16kg sweets of Rs84/kg were purchased.
Regards

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? i didnt understand the question
 
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