Question
An amount becomes four times of itself in 30 years at
simple interest. Find the value of (7R − 40).Solution
Let the amount invested be Rs. 'p'.
Interest earned = 4p − p = Rs. 3p
Simple interest = Principal × Rate × Time ÷ 100
So, 3p = p × R × 30 ÷ 100
Or, R = (3 × 100) ÷ 30 = 10
Required value = 7 × 10 − 40 = 70 − 40 = 30
√324 + √576 = ?/ √9
What will come in place of (?) in the given expression.
25% of 160 + 15% of 200 = ?What will come in place of the question mark (?) in the following expression?
40% of 150 – ?% of 80 = 25% of 400
What will come in the place of question mark (?) in the given expression?
25% of 1280 + (41 × 4) = ?2
1111.25 × 9.05 + 2323.23 × 9.05 – 2121.37 ×9.05 =?
(168 ÷ 12 + 19 × 64)/(22+1) = ?
What will come in the place of question mark (?) in the given expression?
? X (62 - 20) + 60 X 5 = √1296 X 25 - 35 X 43...
24% of 400 × 16% of ? = 384
What will come in the place of question mark (?) in the given expression?
(70 × 8 ÷ 10) × 5 = ?
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