Question
The number of pencils with Tom and Jerry is 11 more than
with Spike. Also, Jerry and Spike together have 9 more than Tom. If Tom and Spike together have 30 pencils, find the total number of pencils they have together.Solution
ATQ,
Let pencils with Tom = x, Jerry = y, Spike = zThen:
x + y = z + 11 ………(1)
y + z = x + 9 ………(2)
x + z = 30 ………(3)
Add (1), (2), and (3):
→ 2(x + y + z) = x + z + 11 + 9 + 30 = x + z + 50
→ x + z = 30
→ 2(x + y + z) = 30 + 50 = 80
→ x + y + z = 40
More No. System Questions
√? + √1296 + √729 = 464/4
1280 ÷ 8 + 490 ÷ √49 + ? = 150 * 2
17.5% of 400 – 24% of 150 = ?
13 X ? = 85 X 4 + √81 + 2
(5⁴) 5 × (25³)³=?
25% of 400 + 3 × 102 = ?2
6 0 - 20 [8 + 12 {8-8 (20-12)+20}-40] ÷ 16 =?
What will come in the place of question mark (?) in the given expression?
? = ((180 × 27) ÷ 60) + ((52 × 70) ÷ (13 × 280))3
...3 √8 × √36 × 13 = ? × √169
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