Question
If 2x +3y = 30 and (x+y)/y = 11/8, then find the value of 5y + 6x
यदि 2x + 3y = 30 और (x + y) / y = 11/8, तो 5y + 6x का मान ज्ञात करें?
Answer B.
B.2x + 3y = 30 --------- (i)
(x+y)/y = 11/8
8x + 8y = 11y
8x – 3y =0 ----(ii)
After adding (i) & (ii)
10 x = 30
x = 3.
Put x = 3 in equation (i)
2*3+3y=30
3y=24
y=8
Put the value of x and y in equation-
5y + 6x = (5 * 8 + 6 * 3) = 40 + 18 = 58
So the correct answer is option B.
B.2x + 3y = 30 --------- (i)
(x+y)/y = 11/8
8x + 8y = 11y
8x – 3y =0 ----(ii)
समीकरण (1) और (2) को जोड़ने पर
10 x = 30
x = 3
x=3 समीकरण (1) में रखने पर
2*3+3y=30
3y=24
y=8
समीकरण में x और y का मान रखें
5y + 6x = (5 * 8 + 6 * 3) = 40 + 18 = 58
इसलिए सही उत्तर विकल्प B है।
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