Math, asked by anaya2124, 10 months ago

?% of 280 + 18% of 550 = 143.8
(a) 11 (b) 18 (c) 21 (d) 16
(e) None of these

Answers

Answered by saketranjan91

2

Step-by-step explanation:

?/100of 280 +18/100of 550=1435/100

1/100(280? +18×550)=1435/100

280?+9900=1435

280?=-8465

so the value of ?will be negative .

so option (d) is correct.

Answered by dbz01

4

Answer:

x/100 ×280 = 143.8 -18/100 ×550

= (14380 - 9900)/100

=4480/100

X=4480/100 ×100/280

X=16

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