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Find the value of the following expressions.
60% of 50% of 40% of 30% of 2000 = ?
30% of 2000 = 600 40% of 600 = 240 50% of 240 = 120 60% of 120 = 72
√? + √225 = √1521
203*197 = ?
203 = 200+3 197 = 200 - 3 => (200 + 3)( 200 - 3) = 2002 - 32 = 40000 - 9 = 39991
30% of 1500 - 20% of 1250 = ?
30% of 1500 = .3*1500 = 450 20% of 1250 = .2*1250 = 250 => 30% of 1500 - 20% of 1250 = 450 - 250 = 200.
What will come in the place of the question mark (?) in the following number series?
4, 6, 9, 5, 0, 6, ?
4 + 2 = 6 ; 6 + 3 = 9 ; 9 - 4 = 5 ; 5 - 5 = 0 ; 0 + 6 = 6 ; 6 + 7 = 13
32, 16, 24, 60, 210, ?
5, 13, 37, 109, 325, ?
If the difference between the compound interest and simple interest on a sum is Rs. 240 accrued in two years at the rate of 10 percent per annual, then what is the principal amount?
As we know that, when difference in the compound interest and simple interest for 2 years with a rate equals to r% on a sum is x, then sum will be = x × (100/r)2 So sum = 240 × (100/10)2 = 240 × 100 = 24000
Meera spends 32% of his monthly salary on shopping, 43% of her monthly salary on household expenditures, if she is left with Rs. 1200, what is her monthly salary?
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