RRB Group-D Model Paper 13 with answers for online practice

Question : 13 of 100

Marks: +1, -0

What will come in place of question mark (?) in the following question? 17% of 900 + 21% of 1400 = 581 - ?

Solution:

Given expression is,
⇒ 17% of 900 + 21% of 1400 = 581 - ?
⇒

17/100×900+21/100×1400=581−?

⇒ 17 × 9 + 21 × 14 = 581 - ?
⇒ 153 + 294 = 581 - ?
⇒ 447 = 581 - ?
⇒ ? = 581 - 447
⇒ ? = 134

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