Martin has x cards

Christian has one card more then the double of Martin

Emilie has the triple of cards of Christian

Together they have 193 cards

How many cards do each of them have?

2. I bought my flat last year for £40,000. The value of my flat increased by 12% in September and then by a further 10% in January this year. What is its value now?

Henry bought 3 sets of pencils. After he bought the pencils, his account balance showed a change of - $30.63. What would have been the change to Henry's account balance had he only bought 1 set of pencils?

What was the interest rate if your balance on an investment of $857 at the end of six years is $1268.36?

Simplify 7/8 divided by 8

Compute the permutations and combinations. A company has 10 men qualified to run a machine that requires 3 operators at a time. Find how many groups of 3 operators are possible.

A sphere has a volume of 32/3pi cubic units. What is the radius of the sphere?

1 1/3 - 3 3/4 1.3 1/4 2.3 4/9 3.5 1/4 4.5

Amount sugar in a candy bar decreased by 6.7% to 3.2 grams how much sugar wascin the candy before the decrease?

Two mechanics worked on a car. The first mechanic charged $85 per hour, andthe second mechanic charged $70 per hour. The mechanics worked for a combinedtotal of 20 hours, and together they charged a total of $1625. How long did each mechanic work?

Which fraction is bigger 1 1/6 or 1 4/12